Photosynthesis in Higher Plants

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.

CAM helps the plants in

1. conserving water
2. secondary growth
3. disease resistance
4. reproduction.

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)

Kranz anatomy is one of the characteristics of the leaves of

1. potato
2. wheat
3. sugarcane
4. mustard

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

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

1. bryophyte
2. gymnosperm
3. angiosperm
4. alga

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

Cyclic photophosphorylation results in the formation of

1. ATP and NADPH
2. ATP, NADPH and O2
3. ATP
4. NADPH.

Stroma in the chloroplasts of higher plants contains

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

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

1. quinone
2. ferredoxin
3. cytochrome-b
4. cytochrome-f