First slide

Classification of Animals

Question

Which of the following characteristic features always holds true for the corresponding group of animals?

Moderate

A

Possess a mouth with an upper and a lower jaw - Chordata
B

3-chambered heart with one incompletely divided ventricle -Reptilia
C

Cartilaginous endoskeleton -Chondrichthyes
D

Viviparous - Mammalia

Solution

Cartilaginous endoskeleton - Chondrichthyes
Possess a mouth with an upper and a lower jaw – Chordata (Cyclostomes lack jaws)
3-chambered heart with one incompletely divided ventricle – Reptilia (Crocodile had 4 chambered heart)
Viviparous – Mammalia (Platypus is oviparous)

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