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Test: Evidences of Evolution (NCERT) - NEET MCQ


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10 Questions MCQ Test Biology Class 12 - Test: Evidences of Evolution (NCERT)

Test: Evidences of Evolution (NCERT) for NEET 2024 is part of Biology Class 12 preparation. The Test: Evidences of Evolution (NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Evidences of Evolution (NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Evidences of Evolution (NCERT) below.
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Test: Evidences of Evolution (NCERT) - Question 1

In the developmental history of mammalian heart, it is observed that it passes through a two chambered fish like heart, three chambered frog like heart and finally four chambered stage
To which hypothesis can this above cited statement be approximated?

Detailed Solution for Test: Evidences of Evolution (NCERT) - Question 1

Biogenetic law or Recapitulation theory was given by Ernst Haeckel in 1866. It states that 'ontogeny repeats phylogeny'. Ontogeny is the life history of an organism while phylogeny is the evolutionary history of the race of that organism. This means that an organism repeats its ancestral history during its development.

Test: Evidences of Evolution (NCERT) - Question 2

Which one of the following describes correctly the homologous structures?

Detailed Solution for Test: Evidences of Evolution (NCERT) - Question 2

Homologous organs have a common origin and are built on the same basic pattern but perform different functions and are modified accordingly.

Test: Evidences of Evolution (NCERT) - Question 3

Which of the following is true?

Detailed Solution for Test: Evidences of Evolution (NCERT) - Question 3

Flipper of seal and wing of birds are modified forelimbs, thus, have same fundamental structure but have different functions. Flippers are meant for swimming and wings are meant for flying. Therefore, these organs are homologous oroans. 

Test: Evidences of Evolution (NCERT) - Question 4

In evolution, the studies can be made at molecular level. For example, the proteins present in the blood of man and ape are similar. The base sequence in nucleic acids and amino acids sequence in proteins of related organism is alike. These are the examples which are specifically referred to in

Detailed Solution for Test: Evidences of Evolution (NCERT) - Question 4

Molecular evolution is a change in the sequence composition of cellular molecules to explain biological changes at the molecular and cellular level using principle of evolutionary biology and population genetics.

Test: Evidences of Evolution (NCERT) - Question 5

The given figure shows an example of 

Detailed Solution for Test: Evidences of Evolution (NCERT) - Question 5

A thorn of Bougainvillea and a tendrill of Curcurbita, both are stem modifications and thus represent homologous structures. The modifications indicate the evolution of the organ to suit different functions which is also known as divergent evolution.

Test: Evidences of Evolution (NCERT) - Question 6

The wings of a bird and the wings of an insect are :

Detailed Solution for Test: Evidences of Evolution (NCERT) - Question 6

Analogous organs are the organs which have similar function but are different in their structural details and origin. The analogous structures are the result of convergent evolution. The wings of an insect are analogous to wings of a bird because the basic structure of the wings of the insects is different from the wings of bird. However, their function is similar.

Test: Evidences of Evolution (NCERT) - Question 7

A population will not exist in Hardy-Weinberg equilibrium if

Detailed Solution for Test: Evidences of Evolution (NCERT) - Question 7

The theory of Hardy- Weinberg equilibrium states that in the absence of disturbance on the level of genetic structure, a population’s existance will not continue. Thus mating should be in a random way.

Test: Evidences of Evolution (NCERT) - Question 8

Forelimbs of cat, lizard used in walking, forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of:

Detailed Solution for Test: Evidences of Evolution (NCERT) - Question 8

Organs which have a common fundamental anatomical plan and similar embryonic origin whatever varied functions they may perform are regarded as homologous organs. For examples the flippers of a whale, a bats wing, fore-limb of a horse, a bird’s wing and forelimbs of human are structurally as well as functionally different.

Test: Evidences of Evolution (NCERT) - Question 9

What can you infer about the structures shown in figure?

Detailed Solution for Test: Evidences of Evolution (NCERT) - Question 9

Given figures represent the forelimbs of different vertebrates, which possess the same basic structural plan, i.e., in each case, the forelimb consists of humerus, radio-ulna, carpals, metacarpals and digits. Thus, the skeletal parts of these forelimbs are similar in structure and arrangement, but have different shapes and functions. It depicts the example of homologous structures.

Test: Evidences of Evolution (NCERT) - Question 10

Industrial melanism is an example of -

Detailed Solution for Test: Evidences of Evolution (NCERT) - Question 10

Natural selection is the most widely accepted theory concerning the principal causal mechanism of evolutionary change profounded by Charles Darwin and Alfred Russel Wallace. It results from the differential reproduction (some members of a population produce abundant offspring, some only a few and still others none), one phenotype as compared with other phenotypes in the same population. This determines the relative share of different genotypes which individuals possess and propagate in a population. Industrial melanism supports evolution by natural selection. It is an adaptation where the moths living in the industrial areas developed melanin pigments to match their bodies to the tree trunks.

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