Assertion: From an evolutionary point of view | vedclass

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(D) The Assertion is incorrect because there is no scientific evidence suggesting that the human gestation period is shortening from an evolutionary p

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If both the Assertion and Reason are incorrect.

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(D) The Assertion is incorrect because there is no scientific evidence suggesting that the human gestation period is shortening from an evolutionary perspective. The gestation period is biologically fixed to ensure the complete development of the foetus.The Reason is correct. $A$ significant evolutionary trend in humans is the development of a larger brain (encephalization),which requires a faster growth rate of the head during the foetal stage to accommodate the increased cranial capacity.Since the Assertion is false and the Reason is true,the correct option is $D$.

Column-$I$	Column-$II$
$(1)$ Charles Darwin	$(a)$ Mutation theory
$(2)$ Lamarck	$(b)$ Germ plasm theory
$(3)$ Hugo de Vries	$(c)$ Philosophie Zoologique
$(4)$ Ernst Haeckel	$(d)$ The Origin of Species
$(5)$ August Weismann	$(e)$ Biogenetic law
-	$(f)$ Essay on Population

Column-$I$	Column-$II$
$(1)$ Human embryos have gill	$(a)$ Chemical evolution
$(2)$ Oparin and Haldane	$(b)$ Simulation experiment
$(3)$ Miller and Urey	$(c)$ Wings of bird and butterfly
$(4)$ Analogous organ	$(d)$ Ontogeny repeats phylogeny

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

Similar Questions

Which one of the following is not a true fossil?

Define and explain divergent evolution,convergent evolution,and mutation.

Match the columns:
Column-$I$ Column-$II$
$(1)$ Charles Darwin $(a)$ Mutation theory
$(2)$ Lamarck $(b)$ Germ plasm theory
$(3)$ Hugo de Vries $(c)$ Philosophie Zoologique
$(4)$ Ernst Haeckel $(d)$ The Origin of Species
$(5)$ August Weismann $(e)$ Biogenetic law
- $(f)$ Essay on Population

Select the correct match from the following:

Match the columns:

Column-$I$ Column-$II$

$(1)$ Human embryos have gill $(a)$ Chemical evolution

$(2)$ Oparin and Haldane $(b)$ Simulation experiment

$(3)$ Miller and Urey $(c)$ Wings of bird and butterfly

$(4)$ Analogous organ $(d)$ Ontogeny repeats phylogeny

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