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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.
You can use this for preparation purpose.
Once you are ready, click on 'Take Quiz' to start the QUIZ.
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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 :

Speciation is most likely to occur in a species with a number
of populations when there is a


Answer :

small population living in a niche with an environment like that of other population.
small population living in an isolated niche.
large population living in an isolated niche.
large population living in a niche with an environment like that of other populations.


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 :

f the fossil of an organism is found in the deeper layers of
earth, then we can predict that


Answer :

the extinction of organism has occurred recently
the extinction of organism has occurred thousands of years ago
the fossil position in the layers of earth is not related to its time of extinction
time of extinction cannot be determined


Question :

_____ Male
XX : Female


Answer :

XY
YY
XX
XXYY


Question :

Which of these is homozygous recessive ?


Answer :

s
ss
Ss
SS


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 :

How was Mendel's work ultimately reconciled with
Darwin's theory of Natural Selection during the
evolutionary synthesis in the 1930s and 1940s ?


Answer :

Mendel's theory was replaced by the mutation theory.
It was recognised that much of the variation we observe in nature is due to recombination, rather than mutation.
Scientists recognised that once one thinks about species as populations, rather than individuals there is no incompatibility between them.
Both (b) and (c).


Question :

Two pink coloured flowers on crossing resulted in 1 red, 2
pink and 1 white flower progeny. The nature of the cross
will be


Answer :

double fertilisation
self-pollination
cross-fertilisation
no fertilisation


Question :

The sequence of events in geographic speciation is most
likely to be :


Answer :

Reproductive isolation
Geographic barrier
Genetic divergence
Genetic divergence