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Photosynthesis in Higher Plants · Question 71

AIPMT 2002MCQEasy📈 Topic in 12% papers+4−1
1

Which of the following absorbs light energy for photosynthesis?

  1. Chlorophyll
  2. Water molecule
  3. O2
  4. RuBP

Answer

(1) Chlorophyll

Solution

As per NCERT, photosynthetic pigments present in the thylakoid membranes of chloroplasts trap light energy; chlorophyll a is the chief pigment, aided by accessory pigments.

∵ Water is only the electron donor, O2 is a by-product and RuBP is the CO2 acceptor of the Calvin cycle,

∴ chlorophyll absorbs light energy for photosynthesis.

Answer: (1)

AIPMT 2002

Keep practising — Photosynthesis in Higher Plants

2

In photosynthesis energy from light reaction to dark reaction is transferred in the form of

  1. ADP
  2. ATP
  3. RuDP
  4. chlorophyll
AIPMT 2002
3

Which pigment system is inactivated in red drop?

  1. PS-I and PS-II
  2. PS-I
  3. PS-II
  4. None of the above
AIPMT 2001
4

Which pair is wrong?

  1. C3-maize
  2. C4-Kranz anatomy
  3. Calvin cycle-PGA
  4. Hatch and Slack cycle-OAA
AIPMT 2001
5

Which is the first CO2 acceptor enzyme in C4 plants?

  1. RuDP carboxylase
  2. Phosphoric acid
  3. RuBisCO
  4. PEP- carboxylase
AIPMT 2000
6

For assimilation of one CO2 molecule, the energy required in form of ATP and NADPH2 are

  1. 2 ATP and 2 NADPH2
  2. 5 ATP and 3 NADPH2
  3. 3 ATP and 2 NADPH2
  4. 18 ATP and 12 NADPH2
AIPMT 2000
7

For the synthesis of one glucose molecule the Calvin cycle operates for

  1. 2 times
  2. 4 times
  3. 6 times
  4. 8 times
AIPMT 2000
8

The first step for initiation of photosynthesis will be

  1. photolysis of water
  2. excitation of chlorophyll molecules due to absorption of light
  3. ATP formation
  4. glucose formation
AIPMT 2000

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