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Photosynthesis in Higher Plants · Question 61

AIPMT 2005MCQEasy📈 Topic in 12% papers+4−1
1

Chlorophyll in chloroplasts is located in

  1. Stroma
  2. Grana
  3. Pyrenoid
  4. Both (1) and (3)

Answer

(2) Grana

Solution

As per NCERT, the membrane system (thylakoids stacked as grana) of the chloroplast traps light energy and synthesises ATP and NADPH; the stroma contains the enzymes of the dark reaction.

⇒ The photosynthetic pigments, including chlorophyll, are present in the thylakoid membranes of the grana.

⇒ The pyrenoid is a protein (starch-forming) body found in algal chloroplasts.

∴ Chlorophyll is located in the grana.

Answer: (2)

AIPMT 2005

Keep practising — Photosynthesis in Higher Plants

2

Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on

  1. Proton gradient
  2. Membrane potential
  3. Accumulation of Na+ ions
  4. Accumulation of K+ ions
AIPMT 2005
3

In C3 plants, the first stable product of photosynthesis during the dark reaction is

  1. malic acid
  2. oxaloacetic acid
  3. 3-phosphoglyceric acid
  4. phosphoglyceraldehyde
AIPMT 2004
4

Plants adapted to low light intensity have

  1. larger photosynthetic unit size than the sun plants
  2. higher rate of CO2 fixation than the sun plants
  3. more extended root system
  4. leaves modified to spines.
AIPMT 2004
5

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

  1. Blue and green
  2. Green and red
  3. Red and violet
  4. Violet and blue.
AIPMT 2003
6

Which one of the following is wrong in relation to photorespiration?

  1. It occurs in chloroplast
  2. It occurs in day time only
  3. It is a characteristic of C4 plants
  4. It is a characteristic of C3 plants.
AIPMT 2003
7

In sugarcane plant 14CO2 is fixed to malic acid, in which the enzyme that fixes CO2 is

  1. ribulose bisphosphate carboxylase
  2. phosphoenolpyruvic acid carboxylase
  3. ribulose phosphate kinase
  4. fructose phosphate.
AIPMT 2003
8

Stomata of CAM plants

  1. are always open
  2. open during the day and close at night
  3. open during the night and close during the day
  4. never open.
AIPMT 2003
9

Which element is located at the centre of the porphyrin ring in chlorophyll?

  1. Calcium
  2. Magnesium
  3. Potassium
  4. Manganese
AIPMT 2003
10

Which one of the following concerns photophosphorylation?

  1. ADP + AMP Light energy ATP
  2. ADP + Inorganic PO4 Light energy ATP
  3. ADP + Inorganic PO4 ATP
  4. AMP + Inorganic PO4 Light energy ATP
AIPMT 2003
11

Which of the following absorbs light energy for photosynthesis?

  1. Chlorophyll
  2. Water molecule
  3. O2
  4. RuBP
AIPMT 2002

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