Welcome to cbsenotes.com! To post messages or access any member only section, you will need an account. Create your free account now.
Already a member ? Click here to login
CBSE Notes 2011-2012 » Heredity and Evolution - Class 10 Biology MCQs (Free Practice Test)

Heredity and Evolution - Class 10 Biology MCQs (Free Practice Test)


************************************************
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.
***********************************************

Question :

Which one provides correct sequence of events in origin
of new species according to Darwinism ?
(i) Natural selection
(ii) Variation and their inheritance
(iii) Survival of the fittest
(iv) Struggle for existence


Answer :

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


Question :

A : Evolution is the gradual change which takes place in
organisms over millions of years and new species are
produced.
R : Heredity is the transmission of characters or traits from
parents to offsprings.


Answer :

Both "A' and 'R' are true and 'R' is the correct explanation of A.
Both 'A' and 'R' are true but 'R" is not the correct explanation of "A'.
'A' is false but 'R' is true
Both 'A' and 'R' are false.


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 :

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 :

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 :

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 :

A cross between a tall plant (TT) and short pea plant (tt)
resulted in progeny that were all tall plants because


Answer :

tallness is the dominant trail
shortness is the dominant trait
tallness is the recessive trait
height of pea plant is not governed by gene T ' o r ' t '


Question :

Select the group which shares maximum number of
common characters:


Answer :

Two individuals of a species
Two species of a genus
Two genera of a family
Two genera of two families


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 :

The theory of evolution of species by natural selection was
given by


Answer :

Mendel
Darwin
Morgan
Lamarck