Fill the blanks in Columns A and B using appropriate terms. Theory Scientists (a) Theory of natural selection A (b) Use and Disuse of Organs B (c) Theory of Mutation C (d) Theory of spontaneous generation D

Theory of natural selection given by Charles Darwin states that the better adapted species are naturally selected by the environment. Lamarck proposed that the organs that are used continuously undergo hypertrophy and those not used, degenerate with time. Hugo De Vries proposed the theory of mutation. The theory of spontaneous generation (abiogenesis) proposed by Aristotle states that life can arise from non-living matter. Theory Scientists (a) Theory of natural selection Darwin (b) Use and Disuse of Organs Lamarck (c) Theory of Mutation De Vries (d) Theory of spontaneous generation Aristotle

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The concept that formed the basis of Lamarck's theory of evolution and later disproved experimentally was:

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Important Questions on Evolution

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Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

Why coacervates are called primitive cells?

HARD

Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

Write salient features of Darwin's theory of Evolution

HARD

Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

Explain the evolution of long neck of giraffe according to Charles Darwin.

EASY

Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

Describe the salient features of Lamarck's theory of inheritance of acquired characters.

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Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

Following are the two statements regarding the origin of life:

(i) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.

(ii) The first autotrophic organisms were the chemoautotrophs that never released oxygen.

Of the above statements which one of the following options is correct?

HARD

Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

The theory of inheritance of acquired characters was proposed by:

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Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

What is reproductive fitness? Explain it with the help of an example.

EASY

Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

The theory of natural selection was proposed by

EASY

Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

Jean-Baptiste Lamarck explained evolution based on:

HARD

Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

According to the Darwinian theory of natural selection, the rate of appearance of new forms is linked to the life cycle or the life span of an organism. Explain with the help of an example.

HARD

Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

Organisms and their organs constantly increase in size., which theory is depicted by the statement?

EASY

Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

Descent of man & selection in relation to sex was written by ___.

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Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

'Inheritance of acquired characters' was proposed by

HARD

Biology>Genetics and Evolution>Evolution>Theories of Evolution of Life

"Survival of the fittest", explain the statement with the help of Darwin's theory.