In the following questions, Statement of assertion (A) is followed by a statement of reason (R). 1. If both assertion and reason are true and the reason is the correct explanation of the assertion, then mark. 2. If both assertion and reason are true but the reason is not the correct explanation of the assertion, then mark. 3. If assertion is true statement but reason is false, then mark. 4. If both assertion and reason are false statements then mark.
Assertion: Bats and whales are classified mammals. Reason: Bats and whales have four chambered heart.A) 1
B) 2
C) 3
D) 4
Correct Answer: B
Solution :
Bats and whales are the members of class Mammalia (L. Mamma = breast). The bats are the only mammals which have wings and can realy fly while whales are the largest animals in existence. Both bats and whales have four chambered heart but birds and crocodiles also have four chambered heart.
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