| BIOLOGY (Theory) |
| Time allowed : 3 hours | Maximum Marks : 70 |
General
Instructions :
|
Code
No. 57/1/1
SECTION A
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What would happen to the rate of photosynthesis in
plants if the
concentration level almost doubles from its present level in the atmosphere?
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In humans, starch digestion begins in the buccal cavity but stops in the stomach. Why ?
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Name the two most biodiversity-rich zones of India.
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Name the hormone that makes the plants more tolerant to various stresses.
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Name the two major groups of cells required in attaining specific immunity
SECTION B
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Name the end products of aerobic and anaerobic glycolysis. List two ways by which molecules of ATP are produced in glycolysis during aerobic respiration in a cell.
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Differentiate between Total Fertility Rate (TFR) and Replacement Level (RL).
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Due to uncontrolled excessive hunting the population of tigers in a forest becomes zero.Discuss the long-term effects of this situation on the population of deer in that forest.
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Name the source gland of leutinising hormone (LH). Mention the other hormone along with which it acts on its target cells/organ. Give their two functions.
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Can all the four chambers of the human heart experience systole simultaneously? Explain justifying your answer
OR
What do you call the circulatory fluid in the body of cockroach ? Mention its three functions.
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