Animal Phyla

Question 1

Porifera

Answer 1

1) Sponges
2) Non symmetrical
3) No Body cavity: No mouth,No anus
4) No segmentation
5) Sub tidal (lives under water)
6) Filter feeders: filter feeding is simply opening up your mouth and taking in whatever happens to be there, while filtering out the undesirable parts.
7) Eg: Sea sponge

Question 2

Cnidaria

Answer 2

1) Radial symmetry
2) Mouth, one opening only for food and waste
3) No segmentation
4) Generally soft, except species of hard corals
5) Tentacles arranged around mouth (some with stinging cell) : Protect them, helps in catching prey
6) Jellyfish, Corals Anemone.

Question 3

Platyhelminthes

Answer 3

1) Bilateral symmetry
2) Mouth (1 opening only, no anus)
3) Flatworms, flat body
4) No segmentation
5) No body cavity except for gut
6) No circulatory or respiratory system
7) Soft
8) No skeleton
9) Ribbon like shape
10) Eg: Tapeworm

Question 4

Annelida

Answer 4

1) Bilateral symmetry
2) Body cavity present, segmented
3) Mouth and anus present
4) Segmented worms
5) filter feeders
6) Ringed shaped segments
8) Eg: feather duster worms, Earth worms, leeches

Question 5

Mollusca

Answer 5

1) Bilateral symmetry
2) Body cavity present
3) Segmented
4) most have radula (hard rasping tongue-like structure) for feeding
5) head and muscular foot
6) most have calcium carbonate (CaCO3) shell
7) Eg: Snails, Clamps, octopus, slugs, chitin, squids

Question 6

Arthropoda

Answer 6

1) Bilateral symmetry
2) Body cavity present
3) Mouth and Anus
4) Segmented
5) Most diverse
6) Hard Exoskeleton made of Chitin
7) head, thorax and abdomen
8) Eg: Crabs, shrimps, insects

Question 7

Chordata

Answer 7

1) All the vertebrates and a few non-vertebrate
2) have a mouth and an anus
3) Chordata has a sub-phylum called vertebrata