Plant Physiology (NEET Biology): Questions 86 - 89 of 257

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Question number: 86

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

MCQ▾

Question

Which of the following conditions are favorable for cyclic photophosphorylation?

Choices

Choice (4) Response
a.

Anaerobic and low light intensity

b.

Aerobic and low light intensity

c.

Anaerobic condition

d.

Aerobic and optimum light

Question number: 87

» Plant Physiology » Photosynthesis » Site of Photosynthesis Take Place

MCQ▾

Question

Algae float in the water during day time and sink during night time because

Choices

Choice (4) Response
a.

They become buoyant due to consumption of food materials in respiration.

b.

They become buoyant in light due to accumulation of oxygen bubbles released in photosynthesis.

c.

They loose weight at night.

d.

They come up to enjoy sunshine.

Question number: 88

» Plant Physiology » Transport in Plants » Transpiration Pull

MCQ▾

Question

In both transpiration and evaporation, water is lost in the form of vapour yet they differ, because

Choices

Choice (4) Response
a.

Frequency of water loss is different in both of them.

b.

Transpiration and evaporation are similar but the rate of water loss differs.

c.

Transpiration is a physiological process and evaporation is a physical process.

d.

Transpiration is a physical process and evaporation is a physiological process.

Question number: 89

» Plant Physiology » Photosynthesis » Pigments Involved in Photosynthesis

MCQ▾

Question

Blackman demonstrated that increasing illumination increased the photosynthetic rate up to a point when CO2 becomes limiting. If light was not limiting, temperature becomes limiting. Emerson found that maximum CO2 fixation could be achieved with brief flashes of light. Mark the correct statement in the following.

Choices

Choice (4) Response
a.

Only one factor can be limited in photosynthesis.

b.

The trapping of light by chloroplast is temperature dependent.

c.

The trapping of light by chloroplast can occur only if CO2 is present.

d.

Photosynthesis consists of a light and dark reaction.

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