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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 :

Two nucleotide sequences found in two different species
are almost exactly the same. This suggests that these species


Answer :

contain identical DNA
may have similar evolutionary histories
have the same number of mutations.
are evolving into the same species.


Question :

The number of pair (s) of sex chromosomes in the zygote
of humans is


Answer :

one
two
three
four


Question :

Which concept was not included in Charles Darwin's theory
of Natural Selection ?


Answer :

Struggle for existence
Punctuated equilibrium
Survival of the fittest
Overproduction of offspring.


Question :

The maleness of a child is determined by


Answer :

the X chromosome in the zygote
the Y chromosome in zygote
the cytoplasm of germ cell which determines the sex
sex is determined by chance


Question :

Two pea plants one with round green seeds (RRyy) and
another with wrinkled yellow (rrYY) seeds produce F1
progeny that have round, yellow (RrYy) seeds. When F1 plants are selfed, the F2 progeny will have new combination
of characters. Choose the new combination from the
following: (i) Round, yellow (ii)Round, green (iii) Wrinkled, yellow (iv)Wrinkled, green


Answer :

(i) and (ii)
(i) and (iv)
(ii) and (iii)
(i) and (iii)


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 :

Answer :



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 :

By studying analogous structures we look for


Answer :

similarities in organ structure
similarities in cell make-up
similarities in appearance and function but different in structure
similarities in appearance that differences in functions


Question :

A basket of vegetables contains carrot, potato, radish and
tomato. Which of them represent the correct homologous
structures ?


Answer :

Carrot and potato
Carrot and tomato
Radish and carrot
Radish and potato