Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Organisms 2 > Midterm 1 > Flashcards

Midterm 1 Flashcards

1
Q

What are the characteristics of living things?

A
  1. Chemical uniqueness
  2. Complexity and hierarchical organization
  3. Reproduction
  4. Possession of a genetic program
  5. Growth
  6. Metabolism
  7. Environmental interaction
  8. Movement
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is a codon?

A

A sequence of three nucleotides that encodes for an amino acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does define the correspondence between sequence of nucleotides in DNA and sequences of amino acids in proteins?

A

Genetic code

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Who are autotrophs?

A

Plants, algae, many bacteria and some unicellular eukaryotes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Does all bacteria are heterotrophs?

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Does all unicellular eukaryotes are autotrophs?

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Do single ocelled organisms undergo developement?

A

Yes, they still grown (ex: phase, divisions)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the study of organism interaction with the environment?

A

Ecology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the ways that plans move?

A
  1. Shoots grow
  2. Flowers open and close
  3. Leaves turn towards the sun
  4. Climbing plants have tendrils that reach out until they have something to grip onto
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

When did the earth formed?

A

4.6 billion years ago

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Was there atmosphere on early earth?

A

No, neither soil or oceans.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

When did life formed and from what?

A

4 billion years ago from primordial soup

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the Oparin-Haldane Hypothesis?

A

Organic compounds characteristic of life formed slowly over time from simple molecules present in the prebiotic environment.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Who came out with the primordial soup theory?

A

Oparin and Haldane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What were the components of early atmospheres?

A
  1. Water vapor
  2. Hydrogen gas
  3. Ammonia
  4. Carbon dioxide
  5. Methane
  6. LIMITED oxygen
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Who tested the primordial soup theory?

A

Miller and Urey

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What produced the Miller and Urey experience?

A

Carbon dioxide was transformed into organic compounds such as amino acid, urea, and fatty acids, essential components of life.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What were the compounds and energetical source in Miller and Urey experience?

A
  1. Water vapor
  2. Ammonia
  3. Methane
  4. Hydrogen

energetical source: electrical sparks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What term describe one part soluble in water and another part insoluble in water?

A

Amphiphilic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the second stage in origins of life?

A

Formation of polymers (e.g: proteins and nucleic acids)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Was the early atmosphere reducing or oxidizing?

A

Strongly reducing (lack of oxygen, was giving electrons)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Could life on earth start again?

A

No. Present atmosphere is too oxidizing.

Molecules necessary for life can’t be synthesized outside cells because the presence of oxygen make them unstable.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What were the necessary steps for life to occur?

A
  1. Simple organic molecules
  2. Complex organic molecules
  3. Cells
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is a codon?

A

A sequence of three nucleotides that encode for an amino acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the best estimate of number of species on Earth?

A

8 million species of eukaryotes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What describes the formation of complex organic molecules from simpler inorganic molecules through chemical reaction?

A

Chemical evolution (first step in the development of life)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What describes the process by which changes in the genetic composition of populations of organisms occur in response to environmental changes?

A

Organic evolution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Who came independently from Darwin with the conception of natural selection?

A

Wallace

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

True or False?

Natural Selection was accepted before Evolution as a theory.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What are the foundations of evolution theory?

A
  1. Geology: history of life is long and changing
  2. Economics (Malthus): population pressures, human populations grow faster than resource
  3. Embryology: Similarities between organisms
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What is Natural Selection?

A

The process whereby organisms better adapted to their environment tend to survive and produce more offspring.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

What explains adaptation?

A

Natural selection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What describes a change or the process of change by which an organism or species becomes better suited to its environment?

A

Adaptation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

What is the process by which features acquire functions for which they were not originally adapted or selected?

A

Exaptation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

What use is a rudimentary feather?

A

Thermoregulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Is evolution random?

A

No. Genetic variability has a random aspect because mutations are random. However, the force that drives evolution is natural selection and it’s not random.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

True or false?

Most mutations are favorable.

A

False. Most mutations are unfavourable or neutral.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

What are the evolutionary theories accepted as having universal application throughout the living world?

A
  1. Perpetual change
  2. Common descent
  3. Multiplication of species
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

What are the evidence for common descent?

A
  1. Conserved genetics (codon usage among living things)

2. Homology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

Define homology.

A

Similarity of parts/organs of different organisms caused by evolutionary derivation from a corresponding part/organ in a common ancestor.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

What defines the developmental history of an organism throughout its entire life?

A

Ontogeny

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

What defines the evolutionary history of a species?

A

Phylogeny

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

Do ontogeny recapitulates phylogeny?

A

No, but it does provide evidence for common descent.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

True or false?

Behavioral factors can be a biological factor that prevent interbreeding.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

What are the two ways that allopatric speciation can occur?

A

Vicariant speciation and Founder effect.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

What speciation describes the ancestral population geographically divided and isolated subpoplations evolve reproductive barriers between them?

A

Allopatric speciation.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

True or false?

In vicariant population, fragments of the ancestral population are left intact.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

What describes a speciation from diverging lineages co-occupy a geographic area?

A

Sympatric speciation.

Different individuals within a species become specialized for occupying different components of the environment.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

Which type of speciation might iguanas floating leads to ?

A

Allopatric: founder effect.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

What type of speciation might geographic separation of caribbean leads to?

A

Allopatric: vicariant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

What type of speciation eurasian blackcap is an example of? Is it due to reproductive or geographic barriers?

A

It’s sympatric speciation because it’s on the same land, and it’s reproductive barrier.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

True or false?

Gradualism is not supported by the fossil record.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

Describes gradualism.

A

Theory like what small changes accumulate slowly over time.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

What describes the pertains to evolutionary changes in frequencies of variant forms of genes within population?

A

Microevolution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

What describes the pertains to evolution on a long timescale?

A

Macroevolution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

What are the patterns in macroevolution?

A
  1. Stasis
  2. Lineage splitting
  3. Extinction
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

What are the evolutionary fates for every species?

A
  1. Give rise to new species

2. Become extinct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

What is a punctuated equilibrium?

A

Long period of stasis, punctuated by a brief event of speciation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

How long does a species survive on average?

A

5-10 million years (stasis)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
60
Q

How long lasts speciation on average?

A

10 000 - 100 000 years (event of speciation)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
61
Q

Since how long the coelacanths exist?

A

80 million years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
62
Q

In what way does the metaphoric tree of life fall appart?

A
  1. Branches are not equal
  2. No central trunk
  3. No directionality
  4. Some line goes from one branch to the other
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
63
Q

True or false?

Character similarity resulting from common ancenstry is the definition of homology.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
64
Q

What name do we give to non-homologous similarities that may be found in various organisms?

A

Homoplasy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
65
Q

True or false?

Characters that build up the evolutionary tree can be behavioural

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
66
Q

What defines the branching diagram showing the inferred evolutionary relationship among various biological species?

A

Phylogenetic tree

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
67
Q

What defines the diagram used in cladistics to show evolutionary relationship between organisms?

A

Cladogram

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
68
Q

What is a clade?

A

A unit of evolutionary common descent that includes ancestral lineage and all descendents.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
69
Q

Defines character

A

Organismal feature that varies between species

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
70
Q

What defines all other variant forms of the character that arose later within the group?

A

A derived character

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
71
Q

What type of clade defines the most recent common ancestor and some but not all descendants of that ancestor?

A

Paraphyletic clade

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
72
Q

What type of clade defines a most recent common ancestor that is not included ?

A

Polyphyletic clade

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
73
Q

Defines taxonomy

A

Study of the principles of scientific classification, systematic ordering and naming of organisms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
74
Q

What is the fundamental way that we classify organisms in biology?

A

It’s based on evolutionary relationships

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
75
Q

What is the science of classification of organisms based on common evolutionary descent?

A

Systematics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
76
Q

Who is the Father of taxonomy?

A

Linneaus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
77
Q

What are the 5 kingdoms in the 5 kingdoms system?

A
  1. Metazoa
  2. Plantae
  3. Fungi
  4. Protista
  5. Monera
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
78
Q

What are the 6 kingdoms system?

A
  1. Metazoa
  2. Plantae
  3. Fungi
  4. Protista
  5. Bacteria
  6. Archea
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
79
Q

Which kingdoms are also domains?

A

Bacteria and archea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
80
Q

What is the simple definition for species?

A

Group of organisms that are capable of producing a fertile offspring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
81
Q

What name do we give to offspring produced by mating of individuals from two different species?

A

Interspecific hybrid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
82
Q

What are the requirements biologists agree to define a species?

A
  1. Individual descend from a common ancestral population
  2. Reproductive compatibility
  3. Genotypic and phenotypic cohesion
83
Q

What is the sexual reproduction?

A

Fusion of 2 gametes

84
Q

True or false?

Asexual reproduction doesn’t exist in vertebrate

A

False, it is rare but it does exist.

85
Q

Does asexual reproduction involve gametes?

A

No.

86
Q

What are the advantages of asexual reproduction?

A

Quick and energy efficient

87
Q

True or false?

Sexual reproduction takes about three time as long as asexual reproduction in species that do both?

A

False, twice as long

88
Q

What is the phenomenon describes by the accumulation of deleterious mutations?

A

Muller’s Ratchet

89
Q

What is the Muller’s ratchet?

A

The accumulation of deleterious mutation

90
Q

What is the disadvantages of asexual reproduction?

A

The accumulation of deleterious mutations

91
Q

What are the advantages of sexual reproduction?

A

Ability to mix and match (more novel genotypes)

92
Q

What are the disadvantages of sexual reproduction?

A
  1. Energetically costly

2. Males do not directly produce offspring

93
Q

True or false?

The main disadvantages of sexual reproduction is the energetically cost.

A

False.

The main disadvantage is that males do not directly produce offspring

94
Q

What type of asexual reproduction is common among bacteria and protozoa?

A

Binary fission

95
Q

What type of asexual reproduction occurs in hydra?

A

Budding

96
Q

Does gemmulation occur in sponges?

A

Yes

97
Q

Fragmentation occurs in what species?

A

In many anemones and sea stars

98
Q

What type of reproduction describes an embryo develops from unfertilized egg?

A

Parthenogenesis

99
Q

Define parthenogenesis

A

Embryo develops from unfertilized egg, sperm may activate but not fuse with egg

100
Q

Are monoecious organisms hermaphroditic?

A

Yes

101
Q

T/F

There is no monoecious vertebrates.

A

False

Some fishes are.

102
Q

T/F

In oviparous eggs, the fertilization is external.

A

False

It can be internal or external

103
Q

Does ovoviviparous fertilization internal?

A

Yes

104
Q

From where does come derive nourishment in ovoviviparous eggs?

A

From yolk

105
Q

What is the organic vessel where the embryo develops?

A

The egg

106
Q

What is the female reproductive/germ cell?

A

The ovoum

107
Q

T/F

Gamete can be diploid

A

False

108
Q

T/F

There is no organelles in eggs

A

False

There is cytoplasm, nucleus, organelles and yolk.

109
Q

The vegetal pole is where there is the most…

A

yolk

110
Q

The animal pole is where there is the most..

A

cytoplasm

111
Q

What type of eggs do we have in echinoderms and molluscs?

A

Isolecithal, like in mammals.

112
Q

What type of egg describes an abundance of yolk densely concentrated at a vegetal pole?

A

Telolecithal

113
Q

Lots of yolk exhibit X development

A

direct (telolecithal)

114
Q

Little yolk exhibit X development

A

indirect (isolecithal, mesolecithal)

115
Q

What is indirect development?

A

Passes through larval stage capable of feeding itself

Undergoes metamorphosis

116
Q

T/F

Cell division occurs more easily in yolk than in cytoplasm.

A

False

Cell division occurs more easily cytoplasm than in yolk.

117
Q

What is the type of cleavage that defines a complete and approximately equal divisions of cells?

A

Holoblastic

118
Q

What is the type of cleavage that describes a division of cell restricted to a small area of egg?

A

Meroblastic

119
Q

Associate the type of eggs with there division

A 
Holoblastic = isolecithal and mesolecithal
Meroblastic = centrolecithal and telolecithal
120
Q

What is the name of the zygote at the end of the cleavage?

A

Blastula, made out of blastomeres

121
Q

What is gastrulation?

A

It converts the blastula into a two or a three-layered embryo

122
Q

How many germ layer does a blastula have?

A

1

123
Q

What is the name of the opening cavity in the blastula?

A

The blastopore

124
Q

What is the name of the process where one side of the blastula bends inward ?

A

Invagination

125
Q

What is the name of the outerlayer cells of lining blastocoel?

A

Ectoderm

126
Q

What is the name of the innerlayer cells linning gut?

A

Endoderm

127
Q

T/F?

All sponges have only one germ layer.

A

False, some are diploblastic

128
Q

What is the first event in organogenesis and from which tissue?

A

Formation of nervous system from ectoderm.

129
Q

What is the first functional organ and from what tissue?

A

Hearth, from mesoderm

130
Q

What is the name of the cavity completely suronded by mesoderm?

A

Coelom

131
Q

From what tissue does the coelom in schizocoely form?

A

Mesoderm

132
Q

From what tissue does the coelom in enterocoely form?

A

Endoderm

133
Q

What are the two types of coelom formation?

A

Schizocoely and enterocoely

134
Q

What are the two types of specification?

A

Cytoplasmic and conditional

135
Q

What describes the capacity of some cell to evoke a developmental response in other cells?

A

Induction

136
Q

Cytoplasmic specification leads to what kind of development?

A

Mosaic

137
Q

Conditional specification leads to what kind of development?

A

Regulative

138
Q

Can individual blastomere in cytoplasmic specification produce a whole embryo?

A

No

139
Q

Do all metazoa have the presence of blastula and gastrula stages?

A

Yes

140
Q

What is the name of a free-swimming ciliated marine larvae characteristic of most molluscs and marine worms?

A

Trocophore

141
Q

Protostomes are divided in which two major classes?

A

Lophotrochozoa and Ecdysozoa

142
Q

Does ecdysozoa ehibit spiral cleavage?

A

Some but not all.

143
Q

What kind of cleavage occurs in most deuterostomes?

A

Radial cleavage

144
Q

What kind of development do most lophotrochozoans protostomes undergo?

A

Mosaic development

145
Q

Platyhelminthes are more likely too undergo what kind of development?

A

Mosaic

146
Q

Echinodermata are more likely to undergo what kind of development?

A

Regulative

147
Q

T/F

All deuterostomes are ceolomate

A

T

148
Q

T/F

All metazoa are multicellular

A

T

149
Q

What is the name that we give to plant-like unicellular eukaryotes?

A

Protophyta

150
Q

Are protozoa from the same ancestor?

A

No, they are not monophyletic.

151
Q

What is a protozoa?

A

An animal-like unicellular eukaryotes

152
Q

Protozoa font partis de quel kingdom?

A

Protista

153
Q

What kind of group are protozoa?

A

Paraphyletic

154
Q

What are the disadvantages of being unicellular?

A
  1. Limited size
  2. Shorter life span
  3. No division of labour
155
Q

What are the advantages of being unicellular?

A
  1. Rapid reproduction

2. Minimal resources required

156
Q

Cilia and flagella are refered to as?

A

Undulipodia

157
Q

What are the two types heterotrophs can be?

A
  1. Holozoic

2. Saprozoic

158
Q

What is a feeder that ingest visible food particle?

A

Holozoic

159
Q

What is a feeder that ingest food in a soluble form?

A

Saprozoic

160
Q

Where does phagocytosis occur in amoebas?

A

Anywhere along the membrane

161
Q

Where does the phagocytosis occur in many unicellular eukaryotes?

A

Cytostome

162
Q

Where does undigestible matter is expelled in protozoans?

A

Cytoproct

163
Q

T/F

All protozoans do asexual reproduction

A

T

164
Q

Does some protozoans reproduce sexually?

A

Oui

165
Q

What types of asexual reproduction do protozoans?

A
  1. Binary fission
  2. Multiple fission
  3. Budding
166
Q

What is are the types of reproduction in paramecium?

A

Binary fission

167
Q

What is the name of temporary union of two ciliate protozoa for the purpose of exchanging chromosomal material?

A

Conjugation

168
Q

T/F

Apicomplexa is a species

A

False.

Apicomplexa is a phylum of parasitic protistes.

169
Q

T/F

All apicomplexa are endoparasites

A

T

170
Q

What are the name of parasite that live outside the host?

A

Ectoparasite

171
Q

What is the reproducion of apicomplexa?

A

Both asexual and sexual

172
Q

What is the phylum of plasmodium malaria?

A

Apicomplexa

173
Q

What is the definition of a definitive host?

A

Where the sexual reproduction occurs, where symbiont matures and reproduce

174
Q

What is the definition of an intermediate host?

A

Where the asexual stage occurs, if no sexual reproduction, but in which maturation and sexual reproduction do not occur

175
Q

What groups are fungi, metazoa, and choanoflagellates?

A

Opisthokonta

176
Q

What is the level of organismal complexity in a protozoa ?

A

Protoplasmic

177
Q

Name an organism that show colonial cellular complexity.

A

Choanoflagellates

178
Q

What is the level of organismal complexity in cnidarians?

A

Cell-tissue

179
Q

What is the level of organismal complexity in platyhelminthes

A

Tissue-organ

180
Q

True or false?

All fungi are multicellular

A

FALSE

181
Q

T/F?

Fungi are chemoheterotrophs.

A

True

182
Q

T/F

Fungi do intracellular digestion

A

F

Extracellular digestion

183
Q

What is an assemblage of cells embedded in a extracellular matric ECM and supported by a skeleton of minute needlelike spicules and protein?

A

A sponge

184
Q

What is an extracellular matric?

A

A collection of extracellular molecules secreted by support cells that provides strucural and biochemical support to the surronding cells.

185
Q

What are the tree form of porifera?

A

Asconoid: flagellated spongeol
Syconoid: flagellated canals
Leuconoid: flagellated chambers

186
Q

From where does water enter in an asconoid sponges?

A

Ostia (one ostium)

187
Q

From where does water is pulled out in a asconoid sponges?

A

Oscolum

188
Q

Define the current of water in asconoid sponges

A

ostia, spongoceol, osculum

189
Q

What is the water movement in syconoid sponges?

A
  1. Incurrent canals
  2. Prosopyles
  3. Radial canal
  4. Apopyles
  5. Spongocoel
  6. Osculum
190
Q

T/F

There is only one osculum in leuconoid.

A

False

191
Q

T/F

There is no spongocoel in leuconoid sponges

A

T

192
Q

What is the name of epithelial type cells in sponges?

A

Pinanocytes

193
Q

Porocytes are cells in what type of sponges

A

Asconoid

194
Q

What are the name of flagellated collar cells in sponges?

A

Choanocytes

195
Q

What are the cells that move through mesohyl for transport of food and oxygen?

A

Archaeocyte

196
Q

What is the major structural protein in ECM of sponges?

A

Collagen

197
Q

T/F

All sponges secretes spongin

A

False

Only demospongiae

198
Q

T/F

Sponges eat by diffusion

A

T

199
Q

T/F

All sponges reproduce sexually and sexually

A

T

200
Q

T/F

Most sponges are dioecious

A

F

Most sponges are monoecious

201
Q

What kind of aseuxal reproduction do sponges?

A
  1. Fragmentation
  2. Budding
  3. Gemmulation
202
Q

What cells are mostly present in gemmules sponges?

A

Archaeocytes

203
Q

From what cell sperm and oocytes emerged in sponges?

A

Choanocytes and sometimes archaeocytes

204
Q

T/F?

Most sponges are ovoviviparous

A

F

Most sponges are viviparous. The

Organisms 2 (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions