Plant Physiology (NEET (National Eligibility cum Medical Entrance Test) Biology): Questions 72 - 78 of 279

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Question number: 72

» Plant Physiology » Photosynthesis » Pigments Involved in Photosynthesis

MCQ▾

Question

Which fractions of the visible spectrum of solar radiations are primarily absorbed by carotenoids of the higher plants?

Choices

Choice (4) Response

a.

Red and violet

b.

Violet and blue

c.

Green and red

d.

Blue and green

Question number: 73

» Plant Physiology » Mineral Nutrients » Macro and Micronutrients

MCQ▾

Question

Which one is not an essential element in plants?

Choices

Choice (4) Response

a.

Boron

b.

Iron

c.

Sulphur

d.

Cadmium

Question number: 74

» Plant Physiology » Transport in Plants » Transpiration Pull

MCQ▾

Question

Of the processes which occur in leaves, the one which may lower their temperature (cooling effect) is

Choices

Choice (4) Response

a.

Respiration

b.

Hydrolysis

c.

Photosynthesis

d.

Transpiration

Question number: 75

» Plant Physiology » Mineral Nutrients » Macro and Micronutrients

MCQ▾

Question

In guard cells, presence of potassium is essential for

Choices

Choice (4) Response

a.

In controlling cell division

b.

In enzymatic reactions

c.

Maintaining osmotic pressure

d.

All of the above

Question number: 76

» Plant Physiology » Plant Growth and Development » Differentiation, Dedifferentiation and Redifferentiation

MCQ▾

Question

The correct sequence of cellular growth stages is

Choices

Choice (4) Response

a.

Elongation→ differentiation→ division.

b.

Differentiation→ division→ elongation.

c.

Division→ elongation→ differentiation.

d.

Division→ differentiation→ elongation.

Question number: 77

» Plant Physiology » Mineral Nutrients » Nitrogen Metabolism

MCQ▾

Question

Which one of the following can fix atmospheric nitrogen directly?

Choices

Choice (4) Response

a.

Castor

b.

Brassica

c.

Petunia

d.

Pea

Question number: 78

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

MCQ▾

Question

Which of the following factors is the most important in the regulation of transpiration?

Choices

Choice (4) Response

a.

Light

b.

Temperature

c.

Wind

d.

Humidity

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