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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 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 : Equal distribution of genes occurs because these genes
are located on pairs of homologous chromosomes.
B : Acquired variations in somatic traits are not passed
from generation to generation.


Answer :

Both 'A' and 'B' are true statements.
Both 'A' and 'B' are false statements.
A' is true while 'B' is false.
A' is false while 'B' is true.


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 :

In peas, a pure tall plant (TT) is crossed with a short plant
(tt). The ratio of pure tali plants to short plants in F2 is


Answer :

1:3
3:1
1:1
2:1


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 :

The branch of biology that deals with transmission of
characters from one generation to other is termed as


Answer :

evolution
genetics
heredity
biogenetic law


Question :

From the list siven below, select the character which can be acquired but not inherited


Answer :

Colour of eye
Colour of skin
Size of body
Nature of hair


Question :

A Mendelian experiment consists in breeding tall pea plants
bearing violet flowers with short pea plants bearing white
flowers. The progeny all bore violet flowers, but almost
half of them are short. This suggests that the genetic makeup
of the tall parent can be depicted as - [NCERT]


Answer :

TTWW
TTww
TtWW
TtWw


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 :

Exchange of genetic material takes place in


Answer :

vegetative reproduction
asexual reproduction
sexual reproduction
budding