The structures that are formed by stacking of organised flattened membranous sacs in the chloroplasts are 
(a) cristae
(b) grana
(c) stroma lamellae
(d) stroma

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Anoxygenic photosynthesis is characteristic of 

(1) Rhodospirillum

(2) Spirogyra

(3) Chlamydomonas 

(4) Ulva

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The correct sequence of cell organelles during photorespiration is 

(1) chloroplast-Golgi bodies-mitochondria

(2) chloroplast-rough endoplasmic reticulum-dictyosomes

(3) chloroplast-peroxisome-mitochondria

(4) chloroplast-vacuole-peroxisome

 

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PGA as the frist CO2 fixation was discovered in photosynthesis of 

(1) bryophyte

(2) gymnosperm

(3) angiosperm

(4) alga

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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

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Cyclic-photophosphorylation results in the formation of 

1. NADPH

2. ATP and NADPH

3. ATP, NADPH and O2

4. ATP

 

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THe C4 -plants are photosynthetically more efficient than C3 -plants because

(1) the CO2 compensation point is more

(2) CO2 generated during photorespiration is trapped and recycled through PEP carboxylase

(3) the CO2 efflux is not prevented

(4) they have more chloroplasts.

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

1. cytochrome-b

2. cytochrome-f

3. quinone

4. ferredoxin

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In the leaves of C4 -plants malic acid synthesis during CO2 fixation occurs in 

(1) epidermal cells

(2) mesophyll cells

(3) bundle sheath

(4) guard cells

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Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch (A-E) make it useful as a storage material?

(A) Easily translocated 

(B) Chemically non-reactive

(C) Easily digested by animals

(D) Osmotically inactive

(E) Synthesized during photosynthesis

The useful properties are 

1. (B) and (C)

2. (B) and (D)

3. (A), (C) and (E)

4. (A) and (E)

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