Friday, 29 January 2021

CBSE Class 12 Biology - MCQ and Online Tests - Unit 7 - Evolution

CBSE Class 12 Biology – MCQ and Online Tests – Unit 7 – Evolution

Every year CBSE conducts board exams for 12th standard. These exams are very competitive to all the students. So our website provides online tests for all the 12th subjects. These tests are also very effective and useful for those who preparing for competitive exams like NEET, JEE, CA etc. It can boost their preparation level and confidence level by attempting these chapter wise online tests.

These online tests are based on latest CBSE Class 12 syllabus. While attempting these our students can identify the weak lessons and continuously practice those lessons for attaining high marks. It also helps to revise the NCERT textbooks thoroughly.


CBSE Class 12 Biology – MCQ and Online Tests – Unit 7 – Evolution

Question 1.
Book ‘Philosophique Zoologique’ was written by:
(a) Lamarck
(b) Mendel
(c) Darwin
(d) Hugo-devries


Answer: (a) Lamarck

Question 2.
Missing link in evolution is:
(a) Pheretima
(b) Limulus
(c) Peripatus
(d) Archaeopterys


Answer: (d) Archaeopterys

Question 3.
Theory of Pangenesis was given by:
(a) Darwin
(b) Lamarck
(c) Weismann
(d) DeVries


Answer: (a) Darwin

Question 4.
Which one of the following phenomenon supports Darwin’s concept of natural selection in organic evolution?
(a) Development of transgenic animals
(b) Production of‘Dolly the sheep’ by cloning
(c) Prevalence of pesticide resistant insects
(d) Development of organs from ‘Stem cells’ for organ transplantation


Answer: (c) Prevalence of pesticide resistant insects

Question 5.
Evolutionary history of an organism is known as:
(a) Ontogeny
(b) Phytogeny
(c) Ancestry
(d) Palaentolgy


Answer: (b) Phytogeny

Question 6.
The biogenetic law of Haeckel is:
(a) Ominis vivum-e-eellula
(b) Omminis cellula-e-cellula
(c) Ontogeny repeats phytogeny
(d) Phytogeny repeats ontogeny


Answer: (c) Ontogeny repeats phytogeny

Question 7.
Hardy-Weinberg principle explains :
(a) Chromosomal
(b) Genetic drift
(c) Genetic equilibrium
(d) All of these


Answer: (c) Genetic equilibrium

Question 8.
As per Neo-Darwinism, which is mainly responsible for evolution?
(a) Mutation
(b) Natural drift
(c) Both of these
(d) All of these


Answer: (b) Natural drift

Question 9.
Wings of Butterfly and birds are:
(a) Vestigial organs
(b) Analogous organs
(c) Homologous organs
(d) Both (a) and (b)


Answer: (b) Analogous organs

Question 10.
Dispersal of population depends on:
(a) On immigration
(b) On Emigration
(c) On Migration
(d) All of these


Answer: (d) All of these




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