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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