A) Animals Morphological features A. Crocodile ? 4-chambered heart B. Sea urchin ? Parapodia C. Obelia ? Metagenesis D. Lemur ? Thecodont A, C and D
B) B, C and D
C) Only A and D
D) Only A and B
Correct Answer: A
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 a sexual medusoid generation. Thecodont dentition is found in mammals.
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