Plant Physiology (NEET Biology): Questions 24 - 30 of 257

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Question number: 24

» Plant Physiology » Transport in Plants » Cell to Cell Transport

MCQ▾

Question

The chief role of transpiration in plants is to cause

Choices

Choice (4) Response
a.

Rapid rise of minerals

b.

Cooling of the plant

c.

Loss of surplus water

d.

Rapid ascent of sap

Question number: 25

» Plant Physiology » Photosynthesis » Photorespiration C3 and C4 Pathways

MCQ▾

Question

In C3 plants, the first stable product of photosynthesis during dark reaction is

Choices

Choice (4) Response
a.

oxaloacetic acid

b.

phosphoglyceraldehyde

c.

3-phosphoglyceric acid

d.

malic acid

Question number: 26

» Plant Physiology » Transport in Plants » Water Potential

MCQ▾

Question

When the mesophyll cells loss water, their DPD

Choices

Choice (4) Response
a.

Decreases

b.

Increases

c.

Remain constant

d. None of the above

Question number: 27

» Plant Physiology » Photosynthesis » Photorespiration C3 and C4 Pathways

MCQ▾

Question

In succulent xerophytes, there is accumulation of malic acid in night, this path of CO2 metabolism is called

Choices

Choice (4) Response
a.

beta carboxylation

b.

Hatch and slack cycle

c.

Crassulacean acid metabolism

d.

Calvin cycle

Question number: 28

» Plant Physiology » Mineral Nutrients » Essential Minerals

MCQ▾

Question

Which of the following essential element is necessary in plants for protein synthesis?

Choices

Choice (4) Response
a.

Nitrogen

b.

Calcium

c.

Magnesium

d.

Phosphorus

Question number: 29

» Plant Physiology » Plant Growth and Development » Growth Regulators-Auxin, Gibberellin, Cytokinin, Ethylene, ABA

MCQ▾

Question

Which combination of gases is suitable for fruit ripening?

Choices

Choice (4) Response
a.

80 % CO2 and 20 % O2

b.

80 % CO2 and 20 % CH2

c.

80 % C2H4 and 20 % CO2

d.

80 % CH4 and 20 % CO2

Question number: 30

» Plant Physiology » Transport in Plants » Guttation

MCQ▾

Question

Stomata open during day time because the guard cells

Choices

Choice (4) Response
a.

Are bean shaped.

b.

Are thin-walled.

c.

Photosynthesize and produce osmotically active sugars or organic acids.

d.

Help in gaseous exchange.

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