Assertion: Reptiles are homoiothermous animals. Reason: They are not able to maintain a constant body temperature.

Question

Assertion-ReasonSalient Features and Classification of Phylum Chordata Up to Class Level

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"All vertebrates are chordates but all chordates are not vertebrates". Justify the statement.

How important is the presence of air bladder in Pisces?

What are the modifications that are observed in birds that help them fly?