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CBSE Notes 2011-2012 » Heredity and Evolution - Class 10 Biology MCQs (Free Practice Test)

Heredity and Evolution - Class 10 Biology MCQs (Free Practice Test)


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Question :

Which of the following statements is not true with respect
to variation ?


Answer :

All variations in a species have equal chance of surviva
Change in genetic composition results in variation
Selection of variants by environmental factors forms the basis of evolutionary processes.
Variation is minimum in asexual reproduction


Question :

A zygote which has an X-chromosome inherited from the
father will develop into a


Answer :

boy
girl
X-chromosome does not determine the sex of a child
either boy or girl


Question :

Select the group which shares maximum number of
common characters:


Answer :

Two individuals of a species
Two species of a genus
Two genera of a family
Two genera of two families


Question :

Which one provides correct sequence of events in origin
of new species according to Darwinism ?
(i) Natural selection
(ii) Variation and their inheritance
(iii) Survival of the fittest
(iv) Struggle for existence


Answer :

(i), (ii), (iii) and (iv)
(ii), (iii), (i) and (iv).
(iii), (iv), (i) and (ii)
(iv), (ii), (iii) and (i)


Question :

A cross between a tall plant (TT) and short pea plant (tt)
resulted in progeny that were all tall plants because


Answer :

tallness is the dominant trail
shortness is the dominant trait
tallness is the recessive trait
height of pea plant is not governed by gene T ' o r ' t '


Question :

Which of the following pairs of organs is analogous to each
other ?


Answer :

Leaf spines and leaf tendrils
Flipper of a whale and leg of a horse
Wings of an insect and wings of a bat
Forelimbs of a frog and human hand Heredity


Question :

The more characteristics two species have in common


Answer :

More closely they are related and more recently they had a common ancestors.
More distantly they are related and more recently they have common ancestors.
More closely they are related and more distantly they have common ancestors
More distantly they are related and more distantly they have common ancestors.


Question :

In evolutionary terms, we have more in common with
[NCERT]


Answer :

a Chinese school-boy
a chimpanzee
a spider
a bacterium


Question :

was a predecessor of Darwin's and developed
the theory of acquired characteristics.


Answer :

Mendel
Lamarck
Weismann
Whittaker


Question :

To study the natural phenomenon of inheritance, Mendel
selected the pea plants. Which of the following properties
were suitable for their studies ? (i) Plants would easily self pollinate or cross pollinate
in nature.
(ii) Plants were easily grown in garden soil with a
considerably shorter generation time.
(iii) Pea plants do not require the true-breeding for
hybridisation experiments.
(iv) Many parts of the plant such as pod, seed, flower,
cotyledons showed distinct phenotypes..


Answer :

(i) ,(ii) and (iii).
(ii) and (iv).
(i) and (ii).
(ii), (iii) and (iv).