Photosynthesis In Higher Plants Question 57

Question: Blackman demonstrated that increasing illumination increased the photosynthetic rate upto a point when $ CO_2 $ becomes limiting. If light was not limiting, temperature becomes limiting. Emerson found that maximum $ C {{O} _ {2}} $ fixation could be achieved with brief flashes of light. Mark the correct statement in the following [CPMT 1988, 89]

Options:

A) Only one factor can be limiting in photosynthesis

B) Photosynthesis consists of light-dependent and light-independent reactions

C) The trapping of light by chloroplast is temperature dependent

D) The trapping of light by chloroplast can occur only if $ C {O} _ {2} $ is present

Show Answer

Answer:

Correct Answer: B

Solution:

Blackman proposed the ’law of limiting factor and also proved that photosynthesis is photochemical reaction (light reaction) and biochemical reaction (dark reaction).



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