InterviewSolution
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InterviewSolution
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X, Y, and Z are three animals. The animal X can fly but animal Y can only run on ground or walls. The forelimbs of animals X and Y have the same basic design but they are used for different purposes such as flying and running respectively. The animal Z became extinct a long time ago. The study of fossils of Z tells us that it had some features like those of X and some like those of Y. In fact, Z is said to form a connecting link in the evolutionary chain of X and Y. (a) What could the animals X, Y and Z be? (b) What name is given to the forelimbs like those of X and Y which have the same basic design but different functions? (c) Name one feature in which Z resembled X. (d) Name one feature in which Z resembled Y. (e) Which is the correct evolutionary chain involving X, Y and Z : X → Z → Y or Y → Z → X? |
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Answer» X, Y, and Z are three animals. The animal X can fly but animal Y can only run on ground or walls. The forelimbs of animals X and Y have the same basic design but they are used for different purposes such as flying and running respectively. The animal Z became extinct a long time ago. The study of fossils of Z tells us that it had some features like those of X and some like those of Y. In fact, Z is said to form a connecting link in the evolutionary chain of X and Y. |
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