features of main phyla

Question 1

Porifera

Answer 1

pore bearing — filter feed, include sponges most basic of all organisms

Question 2

cnidaria

Answer 2

metazoans, phylum includes jellyfish chararterized by stingers and digestve capability

Question 3

arthopoda

Answer 3

phylum has exoskeleton, jointed appendeges a double nerve cord and open circulatory system.
trilobites belong to it

Question 4

echinodermata

Answer 4

includes starfish, sea urchin, sand dollar

then have 5 or more limbs with each line same as the other

Question 5

brachiopoda

Answer 5

‘lamp shells’ they have more than two cell layers and dont have anus. eat and shit out of same hole. has nervous cord and open system

Question 6

mollusca

Answer 6

‘shell living’ toothed tounge and muscular foot to push along

Question 7

chordata

Answer 7

4 key features;
spine like cord
gill slits
post anal trail
dorsal nerve cord