Lab 9 - Invertebrates (2) Flashcards
two other lineages in Bilateria
Ecdysozoa
Deuterostomia
the commonality of ALL members in clade Ecdysozoa
all display ecdysis (moulting of outermost layer)
phyla in clade Ecdysozoa
Phylum Nematoda
Phylum Athropoda
3 lineages in Phylum Arthropoda
Myriapods
Pancrustaceans
Chelicerates
3 distinguishing features of Deuterostomes
- radial, indeterminate cleavage
- coelom forms from buds of the mesoderm
- blastophore forms anus
two phyla in Deutersotomia
- Phylum Chordata
- Phylum Echinodermata
Phyla Echinodermata includes
- sea stars
- urchins
- sand dollars
- sea cucumbers
phyla Chordata includes
- Cephalochordate - lancelets
Urochordata - Tunicates
Vertebrata - Vertebrates
4 characteristics of Phyla Chordata
- notochord
- post-anal tail
- dorsal hollow nerve cord
- pharyngeal gill slits
Ecdysozoan development
protostome invertebrates
Phylum Nematoda are
round worms
Nematode belong to which major lineage
Ecydosozoa
way of life for Nematodes
either free-living or parasitic
type of coelom in Nematodes
pseudocelomate
are Nematodes segmented or unsegmented
unsegmented
what covers a Nematode
cuticle
example of a parasitic Nematode
Ascaris
where does the Nematode Ascaris live
in the intestines of the host
male vs female Ascaris Nematodes
male is smaller than the female and has hooked posterior end
least to most inclusive
Ascaris: Nematodes: Ecdysozoa: Bilateria: Eumetazoa: Metazoa
type of symmetry in Phylum Arthropoda
bilateral
are members in Phyla Arthropoda segmented or unsegmented
segmented
type of coelom in Arthropoda
eucoelomate
type of development in Arthropoda
protostome
what major lineage do Arthropoda belong to
Ecdysozoan
what do members of Arthropoda have
chitinous exoskeleton
type of circulatory system in Arthropoda
open
describe the digestive tract of Arthropoda
complete digestive tract (with anus)
do Arthropoda have a brain
YES
three regions of the Arthropoda body
- head
- thorax
- abdomen
most diverse and numerous of all animal phyla
Arthropoda
three major lineages in Arthropoda
- Chelicerates
- Pancrustaceans
- Myriapods
leas to most inclusive
Arthropoda: Ecdysozoa: Bilateria: Eumetazoa: Metazoa
least to most inclusive (spiders)
Chelicerates: Arthropoda: Ecydsozoa: Bilateria: Eumetazoa: Metazoa
parts of the Chelicerates body/appendages
- four pairs of legs
- two pairs of head appendages
what are the two different head appendages in Chelicerates
- chelicerae
- pedipalps
function of Chelicerae in Chelicerates
pincerlike head appendages used for feeding
function of pedipalps in Chelicerates
mainly sensory but can be used for feeding, locomotion or reproduction
members of Chelicerates
- spiders
- tick
- mites
- scorpions
characteristics of spiders in Chelicerates
cephalothorax and legless abdomen
characters of mites AND ticks in Chelicerates
abdomen fused to leg-bearing region
characters of scorpions in Chelicerates
elongated abdomen bearing poisonous sting
describe the crustacean group based on recent molecular evidence
paraphyletic
why was the crustacean group seen as paraphyletic
some crustaceans were more closely related to insects than other crustaceans
when do crustaceans form a monophyletic group
when together with insects
what is the NEW group that comprises BOTH insects and crustaceans
pancrustaceans
what defines crustaceans from other arthropods
they have
1. mandibles (mouthparts used to crush and grind food)
2. two pairs of antennae
3. thoracic and abdominal appendages
where do crustaceans live
marine and freshwater
least to most inclusive
Crustaceans: Pancrustaceans: Phyla Arthropoda: Ecdysozoan: Bilateria: Eumetazoa: Metazoa
four orders found in the Crustaceans of pancrustaceans
- order Isopoda (pill bugs)
- order Decapoda (crayfish)
- Class Maxillopoda (barnacles)
- Class Branchiopoda (water fleas)
what order is this in Crustaceans of pancrustaceans
terrestrial crustaceans
Isopoda (pill bugs)
what order is this in Crustaceans of pancrustaceans
have seven pairs of legs all of similar shape and size
Isopoda (pill bugs_
what order is this in Crustaceans of pancrustaceans
have well-developed carapace that covers the dorsal side of the cephalothorax
Decapoda (Crayfish)
what order is this in Crustaceans of pancrustaceans
marine suspension feeders
Maxillopoda (branacles)
what order is this in Crustaceans of pancrustaceans
their feet are modified as feeding structures
Maxillopoda (barnacles)
what order is this in Crustaceans of pancrustaceans
small group of planktonic organisms
Branchiopoda (water fleas)
what order is this in Crustaceans of pancrustaceans
indicators of aqueous toxins
Branhicopoda (water fleas)
what order is this in Crustaceans of pancrustaceans
organisms poss gills on their appendages
Branchiopoda (water fleas)
Least to most inclusive
Isopoda: Crustacean: Pancrustaceans: Ecdysozoans: Bilateria: Eumetazoa: Metazoa
least to most inclusive
Decapoda: Crustacean: Pancrustaceans: Ecdysozoans: Bilateria: Eumetazoa: Metazoa
least to most inclusive
Maxillopoda: Crustacean: Pancrustaceans: Ecdysozoans: Bilateria: Eumetazoa: Metazoa
least to most inclusive
Branchiopoda: Crustacean: Pancrustaceans: Ecdysozoans: Bilateria: Eumetazoa: Metazoa
Class Hexapoda are the
insects
what phyla does class Hexapoda belong to
Pancrustaceans
traits that all members of Hexapoda share
- three pairs of legs
- 0, 1 or 2 pairs of wings
- one pair of antennae
5 orders found in Hexapoda in Pancrustaceans
- Hemiptera
- Coleoptera
- Diptera
- Hymenoptera
- Lepidoptera
what order is this from Hexapoda in Pancrustaceans
beetles
Coleptera
what order is this from Hexapoda in Pancrustaceans
True bugs, cicadas, leaf hoppers, aphids…
Hemiptera
what order is this from Hexapoda in Pancrustaceans
flies
diptera
what order is this from Hexapoda in Pancrustaceans
wasps, bees and ants
Hymenoptera
what order is this from Hexapoda in Pancrustaceans
butterflies and moths
Lepidoptera
what order is this from Hexapoda in Pancrustaceans
first pair of wings is ONLY partially hardened or leathery
Hemiptera
what order is this from Hexapoda in Pancrustaceans
have sucking mouthparts
Hemiptera
what order is this from Hexapoda in Pancrustaceans
have four wings but first is hardened into protective covering
Coleoptera
what order is this from Hexapoda in Pancrustaceans
have four, well-veined, membranous wings
Hymenoptera
what order is this from Hexapoda in Pancrustaceans
show construction (waist) between the thorax and abdomen
Hymenoptera
what order is this from Hexapoda in Pancrustaceans
many are well know for their stinging abilities
Hymenoptera
what order is this from Hexapoda in Pancrustaceans
all insects with ONLY TWO membranous wings
Diptera
what order is this from Hexapoda in Pancrustaceans
posse four large wings covered with scales
Lepidoptera
what order is this from Hexapoda in Pancrustaceans
larvae known as caterpillars
Lepidoptera
least to most inclusive
Hemiptera: Hexapoda: Pancrustaceans: Arthropoda: Ecdysozoans: Bilateria: Eumetazoa: Metazoa
least to most inclusive
Coleoptera: Hexapoda: Pancrustaceans: Arthropoda: Ecdysozoans: Bilateria: Eumetazoa: Metazoa
Least to most inclusive
Diptera: Hexapoda: Pancrustaceans: Arthropoda: Ecdysozoans: Bilateria: Eumetazoa: Metazoa
least to most inclusive
Hymenoptera: Hexapoda: Pancrustaceans: Arthropoda: Ecdysozoans: Bilateria: Eumetazoa: Metazoa
least to most inclusive
Lepidoptera: Hexapoda: Pancrustaceans: Arthropoda: Ecdysozoans: Bilateria: Eumetazoa: Metazoa
Myriapods belong to Phyla
Arthropoda
what is included in Myriapods
Centipedes and millipedes
what defines Myriapods from other arthropods
they are mandibulate arthropods with unbranched (uniramous) appendages
habitat of Myriapods
terrestrial
feeding of centipedes vs millipedes
millipedes - herbivrous
centipedes - carnivores
least to most inclusive
centipede: Myriapods: Arthropoda: Ecdysozoa: Bilateria: Eumetazoa: Metazoa
least to most inclusive
millipede: Myriapods: Arthropoda: Ecdysozoa: Bilateria: Eumetazoa: Metazoa
what is the only clade within Bilateria that DOES NOT show protostome development
Deuterostomes
Phylum Echinodermata belongs to the
Deuterostomia
Phylum Echinodermata shows ____ symmetry
radial
habitat of Phylum Echinodermata
marine
distinguishing feature of Phylum Echinodermata
water vascular system
what group of organisms does this describe in Phylum Echinodermata
flattened Echinoderms
sea stars and starfish
what group of organisms does this describe in Phylum Echinodermata
arms have open ambulacral groves
sea stars and starfish
what group of organisms does this describe in Phylum Echinodermata
armless echinoderms
sand dollars and urchins
what endoskeleton does this describe in phylum Echinodermata
globose with enlarged spines
sea urchins
what endoskeleton does this describe in phylum Echinodermata
flattened with numerous short spines
sand dollars
what endoskeleton does this describe in phylum Echinodermata
slightly inflated with numerous short spines
heart or biscuit urchins
what group of organisms does this describe in Phylum Echinodermata
graze feeders or suspended microscopic animals
sand dollars and urchins
what group of organisms does this describe in Phylum Echinodermata
soft bodied cucumber shape
sea cucumbers
what group of organisms does this describe in Phylum Echinodermata
polar axis has been elongated
sea cucumbers
what group of organisms does this describe in Phylum Echinodermata
lack spines
sea cucumbers
what group of organisms does this describe in Phylum Echinodermata
suspension feeders
sea cucumbers
least to most inclusive
sea cucumber: Phylum Echinodermata: Deuterostomia: Bilateria: Eumetazoa: Metazoa
least to most inclusive
sand dollar: Phylum Echinodermata: Deuterostomia: Bilateria: Eumetazoa: Metazoa
least to most inclusive
sea urchin: Phylum Echinodermata: Deuterostomia: Bilateria: Eumetazoa: Metazoa
least to most inclusive
starfish: Phylum Echinodermata: Deuterostomia: Bilateria: Eumetazoa: Metazoa
two invertebrate groups of Phylum Chordata
- Cephalochordata
- Urochordata
one vertebrate group of phylum Chordata
Vertebrates
Cephalochordata are the
lancelets
Cephalochordata have ____ surrounding the mouth
oral tentacles
Cephalochordata lack
any vertebral or cranial skeleton
primitive chordate that shows the four diagnostic features
Amphioxus
least to most inclusive
Amphioxus: Cephalochordata: Phylum Chordata: Deutersotomia: Bilateria: Eumetazoa: Metazoa
least to most inclusive
tunicates/sea squirts: Urochordata: Phylum Chordata: Deuterostomia: Bilateria: Eumetazoa: Metazoa
the mouth of the Cephalochordata opens into
pharynx
what encloses the pharynx in the Cephalochordata
gill bars
what is the opening between the gill bars called in the Cephalochordata
pharyngeal gill slits
function of pharyngeal gill slits in Cephalochordata
gas exchange and filter feeding
where is the notochord located in reference to the pharynx in Cephalochordata
dorsal to the pharynx
what is immediately dorsal to the notochord in Cephalochordata
dorsal nerve cord
Urochordata habitat
marine
adult Urochordata have
LOST most of the chordate characters
adult Urochordata are ____ feeders
sessile filter feeders
A
Chelicera
B
Chelicerates
C
Legs
A
notochord
B
a dorsal hollow nerve cord
C
post-anal tail
D
Pharyngeal slits
A
incurrent siphon
B
excurrent siphon
C
Pharyngeal with gill slits
D
pharynx with gill slits
E
a dorsal hollow nerve cord
6
notochord
1
metazoa
2
no true tissue
3
Eumetazoa (true tissue)
4
radial symmetry
5
bilateral symmetry
6
deuterostomes
7
protostomes
8
Ecdysozoans
9
Lophotrocozoan