biology mcq questions and answers for competitive exams

Ramya_naidu

Posted on


biology mcq questions and answers for competitive exams UPSC SSC , SSC CGL, upsc Civils , Entrance exams Online test practice online free Quiz, mock practice online
16.
Photosynthesis takes place faster in?

a
red light
b
yellow light
c
white light
d
darkness

17.
Which among the following lens is used to treat Presbyopia?

a
Concave Lens
b
Convex Lens
c
Bifocal Lens
d
Cylindrical

18.
Who developed the idea of Crop Rotation?

a
Potato Peterson
b
Turnip Townsend
c
Cabbage Carlson
d
Swede Svenson

19.
Reproduction in most of the bacteria is by a process known as

a
Sexual
b
Budding
c
Sporulation
d
Binary Fission

20.
Lungs of a plant are

a
Leaves
b
Stems
c
Flowers
d
Roots

21.
Pollination is best defined as

a
transfer of pollen from anther to stigma
b
germination of pollen grains
c
growth of pollen tube in ovule
d
visiting flowers by insects

22.
Embryo is found in

a
Flower
b
Leaves
c
Seeds
d
Buds

23.
Plants absorb most part of water needed by them through their

a
embryonic zone
b
growing point
c
root hairs
d
zone of elongation

24.
Bark of which tree is used as a concliment

a
Cinnamon
b
Clove
c
Neem
d
Palm

25.
Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?

a
Exact concentration of solution is not given
b
Character of semi permeable membrane is not given
c
The flow of solution is not possible through semi permeable membrane
d
All are incorrect

26.
Process of cell division can take place by

a
heterosis
b
fusion
c
mitosis
d
None of these

27.
Mutation is

a
a factor responsible for plant growth
b
a change which affects the offspring of F2generation only
c
a change that is inherited
d
a change which affects the parents

28.
Number of chromosomes in Down's syndrome is

a
46
b
47
c
48
d
49

29.
Darwin explained his theory of evolution in a book called

a
Survival of the Fittest
b
The Principles of Population
c
Around the World in Eighty Days
d
On the origin of species

30.
The richest source of vitamin D is

a
Cheese
b
Milk
c
Cod liver oil
d
Spinach

Rate This:
NaN / 5 - 1 votes
Profile photo for Dasaradhan Gajendra