Question

(v) One cartil
3. Choose the correct answer from the options given
below:
(i) The pore-bearer animals are
(a) Fishes
(b) Sponges
(c) Stinging animals
(ii) An example of nematodes is
(a) Ascaris
(b) Hydra
(C) Sycon
(iii) It does not belong to Arthropoda.
(a) Snail
(b) Housefly
(c) Spider​

Answer 1

Explanation:

They are pore bearers which help filter out food from water. Sponges are important because they are some of the most primitive life in the ocean. They help scientists study the early animals and also helps us with chemicals that will be beneficial to ourselves.