Question

Gujarati

Hindi

6.Evolution

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Assertion : From evolutionary point of view, human gestation period is believed to be shortening.

Reason : One major evolutionary trend in humans has been the larger head undergoing relatively faster growth rate in the foetal stage.

Solution

The human gestation period cannot be shortened unless there is really a problem. Complete development will not take place before the gestation period of $270 -290$ days in humans.

Std 12

Biology

What is meant by the term 'Darwin fitness'?

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Darwin proposed that new species evolve from ancestral forms by the

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………. and ……….. proposed that the first form of life could have come from pre-existing non living organic molecular.

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Modern synthetic theory of evolution not involved

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Which of the following is not a vestigial organ?

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Assertion : From evolutionary point of view, human gestation period is believed to be shortening. Reason : One major evolutionary trend in humans has been the larger head undergoing relatively faster growth rate in the foetal stage.

Solution

Similar Questions

What is meant by the term 'Darwin fitness'?

Darwin proposed that new species evolve from ancestral forms by the

………. and ……….. proposed that the first form of life could have come from pre-existing non living organic molecular.

Modern synthetic theory of evolution not involved

Which of the following is not a vestigial organ?

Assertion : From evolutionary point of view, human gestation period is believed to be shortening.

Reason : One major evolutionary trend in humans has been the larger head undergoing relatively faster growth rate in the foetal stage.