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Photosynthesis in Higher Plants · Question 42

AIPMT 2011 (Mains)MCQEasy📈 Topic in 12% papers+4−1
1

In Kranz anatomy, the bundle sheath cells have

  1. thin walls, many intercellular spaces and no chloroplasts
  2. thick walls, no intercellular spaces and large number of chloroplasts
  3. thin walls, no intercellular spaces and several chloroplasts
  4. thick walls, many intercellular spaces and few chloroplasts.

Answer

(2) thick walls, no intercellular spaces and large number of chloroplasts

Solution

As per NCERT, in C4 plants the large bundle sheath cells around the vascular bundles form 'Kranz' anatomy.

⇒ They have a large number of chloroplasts,

⇒ thick walls impervious to gaseous exchange,

⇒ and no intercellular spaces.

Answer: (2)

AIPMT 2011 (Mains)

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2

CAM helps the plants in

  1. conserving water
  2. secondary growth
  3. disease resistance
  4. reproduction.
AIPMT 2011 (Prelims)
3

Read the following four statements, (i), (ii), (iii) and (iv) and select the right option having both correct statements. Statements : (i) Z scheme of light reaction takes place in presence of PS I only. (ii) Only PS I is functional in cyclic photophosphorylation. (iii) Cyclic photophosphorylation results into synthesis of ATP and NADPH2. (iv) Stroma lamellae lack PS II as well as NADP reductase.

  1. (ii) and (iv)
  2. (i) and (ii)
  3. (ii) and (iii)
  4. (iii) and (iv)
AIPMT 2010 (Mains)
4

Kranz anatomy is one of the characteristics of the leaves of

  1. potato
  2. wheat
  3. sugarcane
  4. mustard
AIPMT 2010 (Mains)
5

Study the pathway given below: [figure] In which of the following options correct words for all the three blanks A, B and C are indicated?

  1. A Fixation, B Transamination, C Regeneration
  2. A Decarboxylation, B Reduction, C Regeneration
  3. A Carboxylation, B Decarboxylation, C Reduction
  4. A Fixation, B Decarboxylation, C Regeneration
AIPMT 2010 (Mains)
6

PGA as the first CO2 fixation product was discovered in photosynthesis of

  1. bryophyte
  2. gymnosperm
  3. angiosperm
  4. alga
AIPMT 2010 (Prelims)
7

C4 plants are more efficient in photosynthesis than C3 plants due to

  1. higher leaf area
  2. presence of larger number of chloroplasts in the leaf cells
  3. presence of thin cuticle
  4. lower rate of photorespiration
AIPMT 2010 (Prelims)
8

Cyclic photophosphorylation results in the formation of

  1. ATP and NADPH
  2. ATP, NADPH and O2
  3. ATP
  4. NADPH.
AIPMT 2009
9

Stroma in the chloroplasts of higher plants contains

  1. light-dependent reaction enzymes
  2. ribosomes
  3. chlorophyll
  4. light-independent reaction enzymes.
AIPMT 2009
10

Electrons from excited chlorophyll molecule of photosystem II are accepted first by

  1. quinone
  2. ferredoxin
  3. cytochrome-b
  4. cytochrome-f
AIPMT 2008
11

The C4 plants are photosynthetically more efficient than C3 plants because

  1. the CO2 efflux is not prevented
  2. they have more chloroplasts
  3. the CO2 compensation point is more
  4. CO2 generated during photorespiration is trapped and recycled through PEP carboxylase
AIPMT 2008

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