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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 :

New species may be formed if (i) DNA undergoes significant changes in germ cells
(ii) chromosome number changes in the gamete
(iii) there is no change in the genetic material
(iv) mating does not take place


Answer :

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


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 :

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


Question :

Which of these is homozygous recessive ?


Answer :

s
ss
Ss
SS


Question :

Speciation is the evolutionary process by which


Answer :

hybrid species form.
a new gene pool is formed.
shows up differences in physical traits.
evolutionary paths of species converge.


Question :

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


Answer :

Reproductive isolation
Geographic barrier
Genetic divergence
Genetic divergence


Question :

Study of fossils is known as


Answer :

Paleobotany
Anatomy
Palaeontology
Ornithology


Question :

_____ Male
XX : Female


Answer :

XY
YY
XX
XXYY


Question :

The difference between Homologous and Analogous organs
is that


Answer :

Homologous organs have same design and function whereas analogous organs have different design and function.
Homologous organs have different design and functions whereas analogous organs have same design and functions.
Homologous organs have same design but different functions whereas analogous organs have different design but similar functions.
Homologous organs have different design but similar functions whereas analogous organs have same design but different functions.


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.