biology mcq questions and answers for competitive exams

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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
1.
What would happen if human blood becomes acidic?

a
Oxygen-carrying capacity of haemoglobin is decrease
b
Oxygen-carrying capacity of haemoglobin is increase
c
Will be unpredictable
d
Will be same

2.
Wisdom teeth are

a
last molras
b
incisors
c
last premolars
d
canines

3.
Chemical reactions could have converted simple organic compounds into for the origin of life.

a
Macromolecules
b
Micromolecules
c
Nitrogen, oxygen and other gases
d
Cells

4.
Study of internal structure of organism is called :

a
Anatomy
b
Agrology
c
Agrostology
d
Agronomy

5.
Biofuel is obtained from the seed of -

a
Jamun
b
Jacaranda
c
Jatropa
d
Juniper

6.
Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to

a
angiosperms
b
gymnosperms
c
monocotyledons
d
dicotyledons

7.
Influenza is caused by

a
Bacteria
b
Fungus
c
Virus
d
None of these

8.
Plants that grow in saline water are known as :

a
Halophytes
b
Hydrophytes
c
Mesophytes
d
Thallophytes

9.
Mycology is the branch of botany in which we study about

a
Algae
b
Fungi
c
Bacteria
d
Virus

10.
A plant bud is

a
an embryonic shoot
b
an embryonic leaf
c
an embryonic stem
d
A seed

11.
One of the following is most suitable for study of mutations

a
Haploids
b
Diploids
c
Tetraploids
d
Polyploid

12.
Age of fossils in the past was generally determined by radio-carbon method and other methods involving radioactive elements found in the rocks. More precise methods, which were used recently and led t

a
Electron Spin Resonance (ESR) and fossil DNA
b
study of carbohydrates/proteins in fossils
c
study of carbohydrates/proteins in rocks
d
study of the conditions of fossilization

13.
Of the following taxonomic categories which is the most inclusive (i.e. is the highest in hierarchy)?

a
Order
b
Subspecies
c
Class
d
Genus

14.
Which of has following group of gases contribute to the 'Green House Effect'?

a
Carbon Dioxide and Methane
b
Carbon tetrafluoride and Nitrous oxide
c
Carbon monoxide and Sulphur dioxide
d
Ammonia and Ozone

15.
Fertilization is process in which

a
A male gamete fuse with egg cell
b
Transfer of pollen grains nuclei
c
Fusion of male gamete with polar
d
Formation of seed from ovule

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biology mcq questions and answers for competitive exams

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