The figure shows four animals $(A),(B),(C),(D)$. Select the correct answer with respect to a common…
The figure shows four animals $(A),(B),(C),(D)$. Select the correct answer with respect to a common characteristics of two these animals.
(A) and (D) respire mainly through body wall
(B) and (C) show radial symmetry
(A) and (B) have cnidoblasts for self-defense
(C) and (D) have a true coelom
Solution
From phylum-Arthropoda to phylum-Chordata, all are eucoelomate. In option (c), Octopus, a mollusc, is bilaterally symmetrical, triploblastic and coelomate animal. In option (D), scorpion, an arthropod, is bilaterally symmetrical, triploblastic, segmented and coelomate animal.
