Plant Physiology (NEET Biology): Questions 79 - 85 of 273

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Question number: 79

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

MCQ▾

Question

Leaf fall occurs on abscission layer is formed when the content of

Choices

Choice (4) Response

a.

Gibberellic acid decreases.

b.

Auxin decreases

c.

Abscisic acid decreases

d.

Auxin increases

Question number: 80

» Plant Physiology » Photosynthesis » Photorespiration C3 and C4 Pathways

MCQ▾

Question

When a molecule of pyruvic acid subjected to anaerobic oxidation and forms lactic acid, there is

Choices

Choice (4) Response

a.

Loss of 6 ATP molecules.

b.

Gain of 4 ATP molecules.

c.

Loss of 3 ATP molecules.

d.

Gain of 2 ATP molecules.

Question number: 81

» Plant Physiology » Transport in Plants » Apoplast

MCQ▾

Question

According to one vital force theory, ascent of sap is due to active pulsation of innermost layer of cortex. This theory was given by

Choices

Choice (4) Response

a.

Sacks

b.

J C Bose

c.

Strasburg

d.

Dixon

Question number: 82

» Plant Physiology » Photosynthesis » Pigments Involved in Photosynthesis

MCQ▾

Question

How many molecules of water are needed by a green plant to produce one molecule of hexose/reduce 6 molecules of CO2

Choices

Choice (4) Response

a.

24

b.

One only

c.

6

d.

12

Question number: 83

» Plant Physiology » Mineral Nutrients » Nitrogen Metabolism

MCQ▾

Question

Example of ammonifying bacteria are

Choices

Choice (4) Response

a.

Bacillus valgari

b.

Nitroscoccus

c.

Pseudomonas

d.

Nitrosomonas

Question number: 84

» Plant Physiology » Photosynthesis » Cyclic and Non Cyclic and Photophosphorylation

MCQ▾

Question

Conversion of fructose-6-phosphate to fructose 1, 6 biphosphate is catalyzed by

Choices

Choice (4) Response

a.

phosphofructose kinase

b.

aldolase

c.

hexokinase

d.

All of the above

Question number: 85

» Plant Physiology » Transport in Plants » Osmosis

MCQ▾

Question

A cell placed in strong solution will shrink because

Choices

Choice (4) Response

a.

Cytoplasm will decompose.

b.

Mineral salt will break the cell wall.

c.

Salt water enter the cell.

d.

Water comes out by exosmosis.

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