Question

A. Choose the correct option.
1. Earthworm is an annelid because of the presence of
(a) tube feet.
(b) nephridia.
(c) pores on body.
(d) hard exoskeleton.
2. The Echinoderms have
(a) many jointed appendages.
(b) a single foot for locomotion.
(c) small tube feet for movement.
(d) a well-developed brain.
3. Identify the correct group.
(a) Porifera-Leech, Hydra, Tapeworm (b) Annelida-Crab, Lobster, Earthworm
(c) Arthropoda-Cockroach, Prawn, Ant (d) Echinodermata-Star fish, Prawn, Snail
4. Cnidoblasts are the characteristic features of
(a) cnidarians.
(b) arthropods. (c) nematodes. (d) molluscs.
5. Tube feet help in the movement of
(a) star fish.
(b) earthworm. (c) roundworm. (d) flatworm.​

Answer 1

Answer:

1.nephridia

2.small tube feet for movement

3.(c) option

4.cnidarians

5. star fish

Answer 2

Answer:

1. (b) nephridia

2. (c) small tube feet for movement

3. (c) Arthropoda-Cockroach, Prawn, Ant

4. (a) cnidarians

5. (a) star fish