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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 :

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 the following pairs of organs is analogous to each
other ?


Answer :

Leaf spines and leaf tendrils
Flipper of a whale and leg of a horse
Wings of an insect and wings of a bat
Forelimbs of a frog and human hand Heredity


Question :

A Mendelian experiment consists in breeding tall pea plants
bearing violet flowers with short pea plants bearing white
flowers. The progeny all bore violet flowers, but almost
half of them are short. This suggests that the genetic makeup
of the tall parent can be depicted as - [NCERT]


Answer :

TTWW
TTww
TtWW
TtWw


Question :

Which of the following statement is incorrect ?


Answer :

For every hormone there is a gene.
For every protein there is a gene.
For production of every enzyme there is a gene.
For every molecule of fat there is a gene.


Question :

An example of homologous organs is [NCERT]


Answer :

our arm and a dog's foreleg
our teeth and an elephant's tusks
potato and runners of grass
all of the above.


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 :

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 :

The component of a chromosome that controls heredity is


Answer :

DNA
RNA
histones
proteins