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Biology 1 > Animals lecture 2-8 > Flashcards

Animals lecture 2-8 Flashcards

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1
Q

What makes it an animal

A

Eukaryote, multicellular, heterotropic

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2
Q

an organism that cannot fix carbon and uses organic carbon for growth

A

Heterotrophic

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3
Q

Metazoa

A

Animalia

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4
Q

Complex unicellular, closest thing to animals

A

Choanophlagelates

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5
Q

Non-motile

A

Sessile

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6
Q

Lives on bottom

A

Benthic

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7
Q

Sponges are not a

A

Monophyletic group

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8
Q

Marine and freshwater, sessile and benthic, suspension feeders

A

Sponges

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9
Q

These distinctive cells line the interior body walls of sponges. These cells have a central flagellum that is surrounded by a collar of microvilli. It is their striking resemblance to the single-celled protists called choanoflagellates that make many scientists believe that choanoflagellates are the sister group to the animals. versatile cells. Their flagella beat to create the active pumping of water through the sponge, while the collars are the primary areas that nutrients are absorbed into the sponge.

A

Choanocytes

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10
Q

Tubular cells which make up the pores of a sponge known as ostia.

A

Porocytes

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11
Q

mobile cell (moving like an amoeba) in the body of invertebrates such as echinoderms, mollusks, tunicates or sponges. They move by pseudopodia.

A

Amoebocytes

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12
Q

a minute sharp-pointed object or structure that is typically present in large numbers, such as a fine particle of ice.

A

Spicules

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13
Q

Make the collagen related protein spongin which can be found in the mesophyl

A

Spongocytes

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14
Q

Spicules are calcium carbonate, less diversity

A

Calcarea

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15
Q

Spicules are made of silica; more diverse

A

Silicarea

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16
Q

Biochemicals that are not necessary for “normal” physiology or development

A

Secondary metabolites

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17
Q

a situation where to gain some advantage, you have to pay a price. Big brains in people are a good example. Our brains are certainly nice to have but they are costly in terms of the energy they use up, make childbirth difficult, and are easily damaged.

A

Trade off

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18
Q

Animals with true tissues

A

Eumetazoa

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19
Q

the outermost layer of cells or tissue of an embryo in early development, or the parts derived from this, which include the epidermis and nerve tissue.

A

Ectoderm

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20
Q

the innermost layer of cells or tissue of an embryo in early development, or the parts derived from this, which include the lining of the gut and associated structures.

A

Endoderm

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21
Q

In the water column, not on bottom or top

A

Pelagic

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22
Q

All marine, mostly pelagic, 8 combs of Cilia that propel the animal

A

Ctenophora

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23
Q

responsible for both the digestion of food and the transport of nutrients throughout the body. The cavity has only one opening to the environment. Food goes in and waste comes out that same opening, making it a two-way digestive tract.

A

Gastrovascular cavity

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24
Q

Most cnidarians, marine, polyp stage only , sessile and colonial, asexual or sexual

A

Anthozoa

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25
Q

Mostly marine, polyp and medusa in most, sexual and asexual, Portuguese man of war

A

Hydrozoans

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26
Q

Less diverse, all marine, mostly medusa and some polyp, asexual and sexual

A

Syphozoans

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27
Q

Least diverse, marine, box jellies, mostly medusa and some polyp, asexual and sexual, sea wasps, potent neurotoxins

A

Cubozoans

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28
Q

Mostly marine, polyp and medusa in most, sexual and asexual, Portuguese man of war

A

Hydrozoans

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29
Q

Less diverse, all marine, mostly medusa and some polyp, asexual and sexual

A

Syphozoans

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30
Q

Least diverse, marine, box jellies, mostly medusa and some polyp, asexual and sexual, sea wasps, potent neurotoxins

A

Cubozoans

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31
Q

Stinging cell

A

Cnidocyte

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32
Q

Coiled thread like stinger

A

Nematocyste

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33
Q

Radiata are

A

Diploblastic

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34
Q

Bilataria are

A

Triploblastic

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35
Q

Triploblastic layers

A

Ectoderm, mesoderm, endoderm

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36
Q

Non-living layer in diploblastic

A

Mesoglea

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37
Q

Gives rise to liver, pancreas, lungs, and digestive tract

A

Endooderm

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38
Q

Gives rise to notochord, skeleton, muscles, kindys, most of circulatory system

A

Mesoderm

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39
Q

Gives rise to nervous system, ears,

A

Ectoderm

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40
Q

Body cavity

A

Coelom

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41
Q

Tube with in a tube, digestive tract of a linear body plan, fully lined by mesoderm

A

Coelomate

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42
Q

Platyhelminthys, ectoprocta, phoronida, brachiopoda, annelida, mollusca, nemertea, rotifera

A

Lophotrochozoa

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43
Q

Platy

A

Flat

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44
Q

Endoparasites, complex life cycle, multiple hosts, can cause extra limbs in hosts, usually one vertebrate and one in

A

Trematoda

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45
Q

Parasitic, tiny

A

Monogenea

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46
Q

Endoparasites, complex life cycle, multiple hosts

A

Trematoda

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47
Q

Can cause extra limbs in host, usually one vertebrae one invertebrae

A

Trematoda

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48
Q

Endoparasites, complex life cycles, multiple hosts, has head and egg segments

A

Cestoda

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49
Q

Ecto

A

Outside

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50
Q

Procto

A

Anus

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51
Q

Mostly marine, some fresh, sessile, often colonial, ciliated lophomore feeding structure, coelomate body cavity, muscles for retracting lophofore

A

Ectoprocta

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52
Q

Sessile, marine, secrete chitonous tubes, colonial, u-shaped gut, asexual and sexual

A

Phoronida, horseshoe worm

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53
Q

Marine worm with dorsal and ventral shell, part chitin part calcium carbonate, shell on top of a stalk called the pidicle, feathery clam, sessile, benthic

A

Brachiopoda, lamp shell

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54
Q

Chaeta

A

Hair stuff

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55
Q

Ecto

A

Outside

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56
Q

Procto

A

Anus

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57
Q

Mostly marine, some fresh, sessile, often colonial, ciliated lophomore feeding structure, coelomate body cavity, muscles for retracting lophofore

A

Ectoprocta

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58
Q

Sessile, marine, secrete chitonous tubes, colonial, u-shaped gut, asexual and sexual

A

Phoronida, horseshoe worm

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59
Q

Marine worm with dorsal and ventral shell, part chitin part calcium carbonate, shell on top of a stalk called the pidicle, feathery clam, sessile, benthic

A

Brachiopoda, lamp shell

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60
Q

Unsegmented worms, mostly marine but some fresh and terrestrial, free living, predatory, asexual and hermaphroditic,

A

Nemertea

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61
Q

Terrestrial, freshwater, marine, asexual and sexual,

A

Annelida

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62
Q

3 classes of annelida

A

Oligochaeta, polychaeta, hirudinea

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63
Q

Poly

A

Many

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64
Q

Oligo

A

Few

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65
Q

Mostly terrestrial, some fresh and marine, segments go through whole body

A

Oligochaeta

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66
Q

Used for movement, fend off predators, sensory, respiration

A

Chaeta

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67
Q

Primarily marine, few terrestrial; most diverse of annelida,

A

Polychaeta

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68
Q

Terrestrial and freshwater, some predatory and others hemaphagic, medicinal purposes, anticoagulent

A

Hirudinea

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69
Q

Phagic

A

Eat

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70
Q

Hemo

A

Blood

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71
Q

Hirudin

A

Anticoagulant peptide

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72
Q

marine, living in rocky shorelines, 8 overlapping plates, produces magnetite

A

Polyplacophora (chitons)

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73
Q

One of the hardest substances an animal can make

A

Magnetite

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74
Q

Marine and freshwater; two valves, al to of clams burry inside of something with only the siphon hanging out; use acid to get inside of hard substrate

A

Bivalves

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75
Q

Something that is usually already there and will win

A

Incumbency

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76
Q

Gastro

A

Stomach

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77
Q

Pod

A

Foot

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78
Q

Occasionally have a shell, marine fresh or terrestrial, stomach foot

A

Gastropod

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79
Q

Predatory snails, harpoon prey

A

Cone snails

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80
Q

Marine, produce ink, big eye and brain, can change texture

A

Cephlapod

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81
Q

Pigment in ink

A

Melanin

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82
Q

Horomone that causes it to change color

A

Epinephran (fear hormone)

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83
Q

Important food source, used for jewelry and decoration, some are invasive

A

Mollusca

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84
Q

A beneficial relationship which one of the symbiotic organisms lives inside the othe

A

Endosymbiosis

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85
Q

Most reef-building corals contain this photosynthetic algae that live in their tissues. The corals and algae have a mutualistic relationship. The coral provides the algae with a protected environment and compounds they need for photosynthesis.

A

Zooanthellae

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86
Q

Happens when coral is stressed or has a divergent PH, coral is dying

A

Coral bleaching

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87
Q

Has one axis of symmetry; more complex

A

Bilaterial symmetry

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88
Q

Has many axis of symmetry

A

Radial symmetry

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89
Q

Living middle layer of an embryo in early development

A

Mesoderm

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90
Q

which is a fully functional body cavity. Tissue derived from mesoderm only partly lines the fluid filled body cavity of these animals. Thus, although organs are held in place loosely, they are not as well organized as in a coelomate.

A

Pseudocoelomate

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91
Q

Any organism that lacks a cavity between the body wall and the digestive tract

A

Acoelomate

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92
Q

the anterior, headlike segment of a tapeworm, having suckers, hooks, or the like, for attachment.

A

Scolex

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93
Q

a horseshoe-shaped structure bearing ciliated tentacles around the mouth in certain small marine invertebrates.

A

Lophophore

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94
Q

an animal arising from another by budding or division, especially each of the individuals that make up a colonial organism and typically have different forms and functions.

A

Zooid

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95
Q

the planktonic larva of certain invertebrates, including some mollusks and polychaete worms, having a roughly spherical body, a band of cilia, and a spinning motion.

A

Trochophore

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96
Q

in some worms) an extensible tubular sucking organ.

A

Proboscis

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97
Q

Bristles on marine animals

A

Cetae

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98
Q

a partition separating two chambers, such as that between the nostrils or the chambers of the heart.

A

Septum

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99
Q

An organism that feeds on and breaks down dead plant or animal matter, returning essential nutrients to the ecosystem. include microorganisms such as bacteria and protists as well as larger organisms such as fungi, insects, worms, and isopod crustaceans.

A

Detritivore

100
Q

an anatomical structure that is used by molluscs for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus.

A

Radula

101
Q

primary component in the exoskeletons of arthropods and crustaceans and is also found in the cell walls of fungi. It’s a polysaccharide, and it’s excreted by the epidermal cells in arthropods

A

Chitin

102
Q

the branch of stratigraphy which focuses on correlating and assigning relative ages of rock strata by using the fossil assemblages contained within them.

A

Biostratigraphy

103
Q

Coating of pearls, strong and resilient and iridescent; mother of pearl

A

Nacre

104
Q

Animals that are non-native to the ecosystem whose introduction causes harm; spread far

A

Invasive species

105
Q

Ships carry a large amount of this which is often taken on the coastal waters in one region after ships discharge wastewater or unload cargo and discharge at the next port;; stabilize ships

A

Ballast water

106
Q

Aquatic animals, such a starfish or barnacles, that live on the surface of a sea or lake bottom or rock, but that do not burrow into or beneath the surface

A

Epifaunal

107
Q

Aquatic animals, such as clams or burrowing worms, that live beneath the surface of a sea or lake floor

A

Infaunal

108
Q

Moulting of the cuticle layer; occurs in nematodes and arthropods

A

Ecdysis

109
Q

Each stage in ecdysis for arthropods is called a

A

Instar

110
Q

Live in aquatic soil and animal tissue, parasitic or free living, pseudocoloemate , complete digestive, sexual, cuticle, unsegmented

A

Nematoda

111
Q

Model organism for development, aging, regeneration

A

C elegans

112
Q

We contract from undercooked pigs that contract from mice, then it lives in digestive tract and larva in our tissues

A

Trichenella

113
Q

Gets from one individual to another by mosquito; happens in dogs and humans commonly

A

Heart worm (diafilaria)

114
Q

Most diverse group, coelomate, segmented bodies, jointed appendages, exoskeleton, occur in almost all habitats

A

Arthropod

115
Q

Extinct by permian-Triassic, compound eyes, antennae and limbs

A

Trilobita

116
Q

Almost entirely terrestrial, named after the fang they have, commonly have a venom gland, have a cephalothorax and abdomen

A

Cheliceriformes

117
Q

Fang aka venom gland

A

Chelicera

118
Q

Terrestrial, antennae and chewing mouth parts, centipedes and millipedes, segmented

A

Myriapoda

119
Q

One pair of legs per segment, carnivorous

A

Centimpedes

120
Q

Two pairs of legs per segment, herbivores

A

Millipedes

121
Q

Crustaceans are not

A

Monophyletic

122
Q

Parasitic, life cycle includes arthropod and vertebrae host, anterior protruding probocis, no mouth and alimentary cavity, hooks used to attach onto intestines, some can alter the behavior of their host

A

Acanthocephala

123
Q

Often center of food webs

A

Arthropoda

124
Q

You can tell how long a body has been there off of

A

What form of fly is living there

125
Q

Paleozoic were all marine, modern ones in humid forests, limbs and attenuate but no setments, squirts out slime to get prey, sheds cuticles with tiny hairs sometimes, breathes through open passages in skin called trachea

A

Velvet worms (onychophora)

126
Q

Extremist, inhabits freshwater saltwater and soil, freeswimming sessile or colonial, feeds on decomposing matter and unicellular algae, can survive desiccation 100 years

A

Rotifera (wheel bearers)

127
Q

Extremist, lives in all environments, 4 segments, 4 unjointed legs, can survive extreme temps, pressure radiation, able to survive with hardly any chemical reactions, can survive with 2% watre, can survive desiccation

A

Tardigras (water bears)

128
Q

An ametabolic state

A

Anabiosis

129
Q

All chemical reactions happening in yourself

A

Metabolism

130
Q

Parasitic, life cycle includes arthropod and vertebrae host, have an anterior protrudible procboscis, lack mouth and alimentary canal, hooks used to attatch to the intestine of the host, some can alter behavior of intermediate host, thorny headed worms

A

Acanthocephala

131
Q

Larvae are parasites of arthropods while adults are free living; they alter the behavior of their hosts, mostly by making them go to the water when they want to get out of their host when they are adult

A

Nematomorpha

132
Q

All marine, live in sea floor sediments, coastal and very deep, feeds on other worms, spines around mouth, has cuticle that can be shedded, no internal segments, caudal appendages thought to be used for respiration, spines around mouth, has cuticle layer that is moulted, external annuli but no internal segments, prosoma can be drawn into trunk used for locomotion

A

Priapula, catctus worm, PENIS WORM

133
Q

Marine, live in mud, head completely retractable, cuticle layer, spines used for locomotion, no cilia but spines, spines used for locomotion

A

Kinorhyncha (mud dragon)

134
Q

Rhncha

A

Nose

135
Q

Kino

A

Movement

136
Q

Inhabits deep sea sediments

A

Loricifera

137
Q

Microscopic, found on mouth of lobster, complex life cycle with sessile and free swimming stages

A

Cycliophora

138
Q

Smallest genome of any animal, can change shape, feed by phagocytosis or digestive enzymes, only 4 cell types, move by gliding, dorsal layer and ventral layer

A

Placozoa

139
Q

a crown or crownlike structure.

A

Corona

140
Q

the posterior part of the body of a vertebrate especially when elongated and extending beyond the trunk or main part of the body. Tail

A

Caudal appendages

141
Q

Early cell divisions after fertilization

A

Cleavage

142
Q

Mollusca, annelida, arthropods

A

Protosome

143
Q

Echinoderms and cordates

A

Deutersome

144
Q

Spiral and determinate

A

Protosome

145
Q

Radial and indeterminate

A

Deutersome

146
Q

Schizercloelus: solid masses of mesoderm split and form coelom

A

Protosome

147
Q

Entereocoleous: folds of archeteron form coelom

A

Deutersome

148
Q

Mouth forms from blastopore

A

Protosome

149
Q

Anus forms from blastopore

A

Deutersome

150
Q

Echino

A

Spiny

151
Q

Derm

A

Skin

152
Q

Marin,e some free living some sessile, calcified plates below skin that are emsodermally formed, thin epidermis that has pigment, mechanorecepotors, and sometimes toxic secreting cells, can regenerate a limb, mouth on bottom and anus on top

A

Echinodermata

153
Q

In echinoderms, larva has _ symmetry

A

Bilaterial

154
Q

In echinoderms, adult has __ symmetry

A

Radial

155
Q

Echino

A

Spiny

156
Q

Derm

A

Skin

157
Q

Marin,e some free living some sessile, calcified plates below skin that are emsodermally formed, thin epidermis that has pigment, mechanorecepotors, and sometimes toxic secreting cells, can regenerate a limb, mouth on bottom and anus on top

A

Echinodermata

158
Q

In echinoderms, larva has _ symmetry

A

Bilaterial

159
Q

In echinoderms, adult has __ symmetry

A

Radial

160
Q

Blasto

A

Bud

161
Q

Relatively sessile, scavengers or filter feeders, eviceration, echinoderms laying on its side

A

Sea cucumber, holothurodiea

162
Q

Oid

A

Similar to

163
Q

Mostly active predators, sea stars

A

Asteroidea

164
Q

Ophio

A

Snake

165
Q

No suckers move by lashing out feet, active feeders or filter feeders, photoreceptors, name means snake

A

Ophiouridea

166
Q

Relatively sessile, scavengers or filter feeders, eviceration, echinoderms laying on its side

A

Sea cucumber, holothuroidea

167
Q

Get rid of your external organs

A

Eviceration

168
Q

Relatively sessile, grazers or scavengers or predatory, sea urchins and sand dollars

A

Echinoidea

169
Q

Species in a habitat that is incredibly important to the balance of that habitat; comes from the name for the tip of an arch; ex: sea stars\

A

Keystone species

170
Q

Marine, lives in mud or under rocks, acorn worms

A

Hemichordates

171
Q

All chordates have these at some point in their lives

A

Muscular post-anal tail, notochord, dorsal nerve, pharanygeal slits

172
Q

solid masses of mesoderm split and form coelom

A

Schizocoelous

173
Q

folds of archeteron form coelom

A

Enterocolous

174
Q

a perforated plate by which the entry of seawater into the vascular system of an echinoderm is controlled.

A

Madreporite

175
Q

Brain case

A

Cranium

176
Q

specialised cells that secrete the mineralized structures in the body wall of some invertebrates.

In sponges they secrete calcareous or siliceous spicules which are found in the mesohyl layer of sponges.

A

sclerocytes

177
Q

each segment in the strobila of a tapeworm, containing a complete sexually mature reproductive system.

A

proglottid

178
Q

4 classes of cnidarians

A

anthozoans, hydrozoans, scyphozoans, cubozoans

179
Q

examples of anthozoans

A

sea anemones, corals

180
Q

2 layrs of living cells: ectoderma nd endoderm

A

diploblastic

181
Q

2 layrs of living cells: ecto, meso, and endoderm

A

triploblastic

182
Q

gives rise to liver, pancreas, lungs, and lining of digestive tract

A

endoderm

183
Q

gives rise to: notochord, lining of coelom, muscles, skeleton, gonads, kidneys, and most of circulatory system

A

mesoderm

184
Q

gives rise to outer covering, nervous system components in some phyla, inner ear, lens of eye

A

ectoderm

185
Q

platyhelminthes (flatworms) classes

A

turbellaria, monogenea, trematoda, cestoda

186
Q

flatworm with only one opening that goes in and out of body, regenerates very well, free living, non parasitic

A

turbellaria

187
Q

flatworm, external parasites iwth simple lifestyles, very small, in large numbers can be harmful, thousands of species but not studied often

A

monogenea

188
Q

flatworm, endoparasites, 20,000 species, complex life cycle, multiple hosts, can cause extra limbs,

A

trematoda

189
Q

flatworms, endoparasite, complex life cycle, can use multiple hosts, has head and egg segments, we get it y eating muscles of infected animals

A

cestoda

190
Q

the movement and exchange of organic and inorganic matter back into the production of living matter. The process is regulated by food web pathways that decompose matter into mineral nutrients. Nutrient cycles occur within ecosystems.

A

soil cycling

191
Q

the carcass of a cetacean that has fallen into the bathyal or abyssal zone (i.e. deeper than 1,000 m, or 3,300 ft) on the ocean floor.[2] They can create complex localized ecosystems that supply sustenance to deep-sea organisms for decades.[3] This is unlike in shallower waters, where a whale carcass will be consumed by scavengers over a relatively short period of time. It was with the development of deep-sea robotic exploration that whale falls were first observed in the late 1970s.[4]

A

whale fall communities

192
Q

he habit of certain animals of feeding on blood (from the Greek words, haima “blood” and phagein “to eat”). Since blood is a fluid tissue rich in nutritious proteins and lipids that can be taken without enormous effort, hematophagy has evolved as a preferred form of feeding in many small animals such as worms and arthropods. Some intestinal nematodes, such as Ancylostomids, feed on blood extracted from the capillaries of the gut and about 75% of all species of leeches (e.g. Hirudo medicinalis)[citation needed], a free-living worm,

A

hemophagic

193
Q

An anticlotting agent that prevents blood clots from traveling through the bloodstream to clog up a vessel

A

hirudin

194
Q

platyhelminthes

A

flatoworms

195
Q

ectoprocta

A

bryozoans

196
Q

phoronida

A

phoronids

197
Q

brachiopoda

A

brachipods or lamp shells

198
Q

annelida

A

segmetned worms

199
Q

mollusca

A

snails, clams, squid, octopus

200
Q

nemertea

A

ribbon worms

201
Q

individual is a zooid

A

ectoprocta

202
Q

oligochaeta

A

earthworms and relatives

203
Q

polychaeta

A

polychaets

204
Q

hirudinea

A

leeches

205
Q

classes of mollusca

A

polyplacophora, bivalvia, gastropoda, cephalopoda

206
Q

ex of polyplacophora

A

chitons

207
Q

ex of bivalvia

A

clams, oysters, scallops, mussels

208
Q

ex of gastropoda

A

abalone, limpets, conch, nudibranchs, snails and slugs

209
Q

cephalopoda

A

squid, octopodes, nautilus, cuttlefish

210
Q

ex of gastropoda

A

abalone, limpets, conch, nudibranchs, snails and slugs

211
Q

cephalopoda

A

squid, octopodes, nautilus, cuttlefish

212
Q

(from the latin word for cloak) a significant part of the anatomy of molluscs: it is the dorsal body wall which covers the visceral mass and usually protrudes in the form of flaps well beyond the visceral mass itself.

A

mantle

213
Q

an anatomical feature that is found in many cephalopod mollusks used to produce the defensive cephalopod ink.

A

ink sac

214
Q

the upper part of the human body, or the front or upper part of the body of an animal, typically separated from the rest of the body by a neck, and containing the brain, mouth, and sense organs.

A

head

215
Q

the part of the body of a mammal between the neck and the abdomen, including the cavity enclosed by the ribs, breastbone, and dorsal vertebrae, and containing the chief organs of circulation and respiration; the chest.

A

thorax

216
Q

The anterior section of arachnids and many crustaceans, consisting of the fused head and thorax.

A

cephalothroax

217
Q

the part of the body of a vertebrate containing the digestive organs; the belly. In humans and other mammals, it is bounded by the diaphragm and the pelvis.

A

abdomen

218
Q

any of a number of different organs through which the silk, gossamer, or thread of spiders, silkworms, and certain other insects is produced.

A

spinnerets

219
Q

Any of the various glands in silk-spinning insects and spiders that secrete a fluid that hardens into silk on exposure to air.

A

silk gland

220
Q

a system of interlocking and interdependent food chains.

A

food web

221
Q

the act of transferring pollen grains from the male anther of a flower to the female stigma.

A

pollination

222
Q

the application and study of insect and other arthropod biology to criminal matters.

A

forensic entomology

223
Q

any agent (animal, or microorganism) that carries and transmits an infectious pathogen into another living organism. ex: mosquito

A

disease vector

224
Q

brachepod feed on top of the surface, i.e.

A

epifaunal

225
Q

feed below the surface, helped survive mass extinction

A

infawnal

226
Q

arthropod subphyla

A

trilobita, cheliceriformes, myriapoda, crustacea, hexapoda

227
Q

trilobita ex

A

trilobites

228
Q

cheliceriformes ex

A

spiders, mites, and scorpions

229
Q

myriapoda ex

A

millipedes and centipedes

230
Q

crustacea ex

A

lobsters, crabs, barnacles, etc

231
Q

hexapoda ex

A

insects

232
Q

you can tell how long a body has been there by

A

what stage of fly is in the body

233
Q

look for dna to find a particular animal, can tell what animals and bacteria are here by filtering and sequencing a liquidd

A

environmental sequencing

234
Q

a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration. The system is composed of canals connecting numerous tube feet.

A

water vascular system

235
Q

each of a large number of small, flexible, hollow appendages protruding through the ambulacra, used either for locomotion or for collecting food and operated by hydraulic pressure within the water-vascular system.

A

tube feet

236
Q

extra sensitive, a sense organ or cell that responds to mechanical stimuli such as touch or sound.

A

mechanoreceptor

237
Q

larva echinoderms are

A

bilateral

238
Q

adult echinoderms are

A

radial

239
Q

crinoidea; filter feeders, sessile or free-swimming

A

sea lillies and feather stars

240
Q

holothuroidea

A

sea cucumbers

241
Q

echinoidea

A

sea urchins and sand dollars

242
Q

hemichordates

A

acorn worms

243
Q

urochordata

A

tunicates or sea squirts

244
Q

urochordates only retain

A

pharynx with slits

245
Q

cephalochordata

A

lancelets or amphioxus

246
Q

cephalochordate retain

A

all 4 chordate characteristics

Biology 1 (14 decks)

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