Biology - Mock Test 38

Question 371

Internal fertilization occurs

A) in female body B) outside female body C) in male body D) outside male body

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Question 372

The protistan genome has

A) Free nucleic acid aggregates B) Membrane-bound nucleoproteins embedded in the cytoplasm C) Gene containing nucleoproteins condensed togetherin a loose mass D) nucleoprotein in direct contact with cell substance

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Question 373

The correlation between the number of stomata and the epidermal cells per unit area is called________

A) Stomatal index B) Stomatal frequency C) Transpiration coefficient D) Both a & b

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Question 374

When plant shows wilting of leaves at noon and recovery at evening, it is

A) Incipient wilting B) Permanent wilting C) Mid-day desiccation D) Temporary wilting

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Question 375

The pressure bomb technique is used for measuring________

A) Root pressure B) Tension on water column C) Transport velocity of xylem sap D) Imbibition pressure

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Question 376

Sugar translocation in sieve tubes is a___________

A) Physiological process B) Bidirectional process C) Physical process D) Both a & b

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Question 377

Food is translocated in phloem as_______

A) Raffinose B) Sorbitol C) Sucrose D) All of these

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Question 378

Which among the following is not an objection to the Munch's pressure flow hypothesis_________

A) Vacuoles of adjacent sieve tube cells are not continuous. B) Rate of flow of water and solutes can be different in the same sieve tube C) Phloem transport is not influenced by water deficit. D) Injury in the plants cause exudation of solution rich in organic solutes.

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Question 379

Transpiration magnitude is higher in smaller plants then larger plants due to

A) More stomatal frequency B) More transpiration index C) High root/shoot ratio D) Low root/shoot ratio

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Question 380

Transpiration is significant in________

A) Development of mechanical tissue, B) Increasing quality of tissue C) Decreasing concentration of minerals D) Both a & b

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