Animal KingdomHard

Question

Which one of the following pairs correctly matched ? [2007]
Animals             Morphological features
(i) Crocodile       -       4 chambered heart
(ii) Sea urchin       -       Parapodia
(iii) Obelia       -       Metegenesis
(iv) Lemur       -       Thecodont

Options

A.(i) , (iii) and (iv)
B.(ii) , (iii) and (iv)
C.Only (i) and (iv)
D.Only (i) and (ii)

Solution

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 sexual medusonid generation. Thecodont dentiton is found in mammals.

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