Plant Physiology-Transport in Plants (NEET (National Eligibility cum Medical Entrance Test) Biology): Questions 32 - 38 of 80

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Question number: 32

» Plant Physiology » Transport in Plants » Transpiration-Opening and Closing of Stomata

MCQ▾

Question

Gaseous exchange in land plants takes place through stomatal opening, while in submerged hydrophytes it takes place by

Choices

Choice (4) Response

a.

Lenticels

b.

Stomata

c.

Hydathodes

d.

General surface of the cells by diffusion

Question number: 33

» Plant Physiology » Transport in Plants » Active Transport

MCQ▾

Question

Ion uptake is called active because

Choices

Choice (4) Response

a.

energy is expended

b.

ions are active

c.

ions move freely

d.

None of the above

Question number: 34

» Plant Physiology » Transport in Plants » Transpiration Pull

MCQ▾

Question

Transpiration efficiency is the ratio of

Choices

Choice (4) Response

a.

Dry matter produced/hg. Of transpired water.

b.

Absorption to transpiration.

c.

Rate of ascent of sap to transpiration.

d.

Transpiration to area of the leaf.

Question number: 35

» Plant Physiology » Transport in Plants » Guttation

MCQ▾

Question

A specialized multicellular structure in leaves which excretes water droplets is called as

Choices

Choice (4) Response

a.

Hydathodes

b.

Stomata

c.

Wounds

d.

Lenticels

Question number: 36

» Plant Physiology » Transport in Plants » Phloem Transport

MCQ▾

Question

Which theory explained the translocation of long interval?

Choices

Choice (4) Response

a.

Pressure flow

b.

Protoplasmic streaming

c.

Transcelier streaming

d.

Cyclosis

Question number: 37

» Plant Physiology » Transport in Plants » Transpiration-Opening and Closing of Stomata

MCQ▾

Question

Stomatal index (SI) is equal to

Choices

Choice (4) Response

a.

E + S

E

b.

S

E + S

c.

S

E-S

d.

E

E + S

Question number: 38

» Plant Physiology » Transport in Plants » Transpiration-Opening and Closing of Stomata

MCQ▾

Question

Generally stomata found on the lower surface of leaf. Thus, approximate percentage of transpiration through abaxial surface is

Choices

Choice (4) Response

a.

67 %

b.

47 %

c.

97 %

d.

57 %

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