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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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A select subset of questions has been made available here.
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Question :

A : Closely related species have few characteristics in
common.
B : Interbreeding among individuals of different
populations of a species maintains a free flow of genes
in these populations.


Answer :

'A' Right, 'B' Right
'A' Right, 'B' Wrong
A' Wrong, 'B' Right
'A' Wrong, 'B' Wrong


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 :

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 :

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 :

The fossil remains of Archaeopteryx is a connecting link
between


Answer :

reptiles and mammals
reptiles and bird
fish and amphibian
amphibian and reptile


Question :

Natural selection is called 'survival of the fittest'. Which
of the following statements best describes an organism ?


Answer :

How strong it is compared to other individuals of the same species.
How much food and resources it is able to gather for its offspring.
The ability to adapt to the environment in the niche it occupies.
The number of fertile offspring it has.


Question :

Some types of variation are due to changes in the genetic
material. What is this type of change called ?


Answer :

Mutation
Sterilisation
Fertilisation
Radiation


Question :

According to Darwin's theory of evolution, differences
between species may be the result of


Answer :

natural selection
mutagenic agents
the disuse of body structures.
the transmission of acquired characteristics.


Question :

A trait in an organism is influenced by


Answer :

paternal DNA only
maternal DNA only
both maternal and paternal DNA
neither by paternal nor by maternal DNA


Question :

The structural similarities between the flippers of whales
and the arms of humans are used to show that the


Answer :

whales evolved from the human species
whales are older than the human species
human species began life in the oceans
human species and whales have a common ancestor.