Question

Which of the following pairs are correct matched?

Animals Morphological features

(i) Crocodile – 4-chambered heart

(ii) Sea urchin – Parapodia

(iii) Obelia – Metagenesis

(iv) Lemur – Thecodont

(a) (ii), (iii) and (iv)

(b) (b) only (i) and (iv)

(c) only (i) and (ii)

(d) (i), (iii) and (iv).

Answer 1

ANS: (d) (i), (iii) and (iv).

EXPLANATION:

Exceptionally crocodile has 4-chambered heart. In Obelia the alternation of generation is called Metagenesis in which an asexual polypoid generation appears to alternate regularly with a sexual medusoid generation. Thecodont dentition is found in mammals.

Exceptionally crocodile has 4-chambered heart. In Obelia the alternation of generation is called Metagenesis in which an asexual polypoid generation appears to alternate regularly with a sexual medusoid generation. Thecodont dentition is found in mammals