13.
Plants absorb most part of water needed by them through their
A. embryonic zone
B. growing point
C. root hairs
D. zone of elongation
Answer & Explanation
Answer: Option C
Explanation:
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14.
Photo-oxidation is
A. photorespiration
B. photolysis
C. light and oxygen induced breakdown
D. All of the above
Answer & Explanation
Answer: Option D
Explanation:
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15.
Process of cell division can take place by
A. heterosis B. fusion
C. mitosis D. None of these
Answer & Explanation
Answer: Option C
Explanation:
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16.
Most highly intelligent mammals are
A. whales B. dolphins
C. elephants D. kangaroos
Answer & Explanation
Answer: Option B
Explanation:
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17.
Plant development is influenced by
A. quality of light only
B. quality and quantity of light
C. quality and duration of light
D. quality, quantity and duration of light
Answer & Explanation
Answer: Option D
Explanation:
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18.
Prokaryotic cells lack
A. nucleolus
B. nuclear membrane
C. membrane bound by organelles
D. All of these
Answer & Explanation
Answer: Option D
Explanation:
No answer description available for this question.