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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 :

Which of the following is a recessive trait in garden pea
plant ?


Answer :

Wrinkled seeds
Round seeds
Oval seeds
Coloured seed coat


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 :

A cross between tall pea plants with yellow seeds (Tt Yy)
and dwarf plants with green seeds (tt yy), progeny will
be


Answer :

Tall plants with yellow seeds and dwarf plants with green seeds.
Tall plants with yellow seeds and dwarf plants with yellow seeds.
All tall plants with yellow seeds.
Tall plants with yellow seeds, dwarf plants with yellow seeds, tall plants with green seeds and dwarf plants with green seeds.


Question :

The two versions of a trait (character) which are brought
in by the male and female gametes are situated on


Answer :

copies of the same chromosome
two different chromosomes
sex chromosomes
any chromosome


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 :

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


Answer :

one
two
three
four


Question :

One of the examples of two analogous organs can be the
wing of parrot and [CBSE Sample Paper 2003]


Answer :

flipper of whale
foreleg of horse
front leg of frog
wings of housefly


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 :

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 :

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.