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General Science MCQ Questions and Answers for competitive exams

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General Science MCQ Questions and Answers for competitive exams UPSC IAS Prelims, SSC CGL, CHSL,UGC NET, bank exams , Entrance exams test Online Quiz practice Questions Practice

General Science gk Questions and Answers

16.
During the day time plants

a
take in carbon dioxide and give out oxygen
b
take in carbon dioxide and give out nitrogen
c
take in nitrogen and give out oxygen
d
take in oxygen and give out carbon dioxide
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17.
Bulbils takes part in

a
Vegetative reproduction
b
Respiration
c
Food storage
d
Sexual reproduction
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18.
Blue-green algae are included in the group

a
Fungi
b
Eubacteria
c
Protozoa
d
Cyanobacteria
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19.
From which part of Opium plant we get morphine -

a
Fruit coat
b
Bark
c
Stem
d
Leaves
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20.
Plants differ from animals in having

a
catabolism
b
localised growth
c
metabolism
d
locomotion
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21.
Eutrophication of a water body enhances

a
Biological oxygen demand
b
Neither a nor b
c
Organic matter production
d
Both (1) & (2)
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22.
The nutritive tissue in the seeds of higher plants is known as

a
hypocotyl
b
embryo
c
endosperm
d
nucellus
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23.
Some species of plants are insectivorous. Why?

a
They have remained in that particular stage of evolution as living fossils, a link between autotrophs and heterotrophs
b
Their growth in shady and dark places does not allow them to undertake sufficient photosynthesis and thus, they depend on insects for nutrition
c
They cannot synthesise certain vitamins themselves and depend on the insects digested by them
d
They are adapted to grow in nitrogen deficient soils and thus, depend on insects for sufficient nitrogenous nutrition
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24.
The acid stored in batteries is:

a
Nitric acid
b
Sulphuric acid
c
Hydrochloric acid
d
Acetic acid
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25.
The commonly used coolant in refrigerators is

a
Oxygen
b
Nitrogen
c
Freon
d
Ammonia
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26.
An eardrum is absent in:

a
snakes
b
tuatara
c
turtles
d
toads
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27.
The substrate of photorespiration is

a
Glucose
b
Pyruvic acid
c
Fructose
d
Glycolate
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28.
Study of newly born up to the age of 3 months is called

a
Nematology
b
Neonatology
c
Chorology
d
Conchology
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29.
Which among the given weeds has been found useful to check water pollution caused by industrial effluents -

a
Parthenium
b
Both (1 ) & (2 )
c
Water hyacinth
d
Elephant grass
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30.
Which one of the following groups of animals belongs to the category of endangered species?

a
Great Indian Bustard, Musk Deer, Red Panda and Asiatic Wild Ass
b
Snow Leopard, Swamp Deer, Rhesus Monkey and Saras (Crane)
c
Lion-tailed Macaque, Blue Bull, Hanuman Langur and Cheetal
d
Kashmir Stag, Cheetal, Blue Bull and Great Indian Bustard
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