Question

Help on 20

18) Nematodes and arthropods both A) are suspension feeders D) develop an anus from the blastopore (pore) f E) are lophotrochozoans grow by shedding their exoskeleton in the gastrula stage 19) Match the class of Arthropods on the left with the appropriate typical charácteristic on the right. i. Crustacea ii. Insecta ili. Chilopoda iv. Arachnida a. typically terrestrial 2 body segments, 4 pairs of app A)i b. highly segmented, each segment has 1 pair of legs c. typically terrestrial, 3 body segments, 3 pairs of legs d. usually marine, 4+ pairs of legs, 2-3 body segments c; ii d; ii is b; ii a; ii D) i = d; ii = c; iii 20) Match the class of Porifera on the left with the appropriate characteristic on the right. i. Demospongiae a. SiOs spicules, freshwater, sponging A) i-a, ii-b, iil-c B) i-c, ii-a, iii-b b. CaCO C. spicules, marine ili. Hexactinellida 6-rayed spicules, so' spicules, marine C) i-c, ii-b, i-a

Answer 1

Nematode and arthropods both grow by shedding their exoskeleton

D- i:d, ii:c, iii:b, iv: a

1. i: a, ii:b, iii:c