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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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Question :

To study the natural phenomenon of inheritance, Mendel
selected the pea plants. Which of the following properties
were suitable for their studies ? (i) Plants would easily self pollinate or cross pollinate
in nature.
(ii) Plants were easily grown in garden soil with a
considerably shorter generation time.
(iii) Pea plants do not require the true-breeding for
hybridisation experiments.
(iv) Many parts of the plant such as pod, seed, flower,
cotyledons showed distinct phenotypes..


Answer :

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


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 :

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 :

was a predecessor of Darwin's and developed
the theory of acquired characteristics.


Answer :

Mendel
Lamarck
Weismann
Whittaker


Question :

Differences between organisms in a species are described
as variation. Which of the following would you describe
as continuous variation ?


Answer :

Hair colour
Eye colou
Weight
Sex


Question :

Select the correct statement:


Answer :

Tendril of a pea plant and phylloclade of Opuntia are homologous
Tendril of a pea plant and phylloclade of Opuntia are analogous
Wings of birds and limbs of lizards are analogous
Wings of birds and wings of bat are homologous


Question :

Some dinosaurs had feathers although they could not fly
but birds have feathers that help them to fly. In the context
of evolution this means that


Answer :

reptiles have evolved from birds
there is no evolutionary connection between reptiles and birds
feathers are homologous structures in both the organisms
birds have evolved from reptiles


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 theory of evolution of species by natural selection was
given by


Answer :

Mendel
Darwin
Morgan
Lamarck


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