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

(1) bryophyte

(2) gymnosperm

(3) angiosperm

(4) algae

Cyclic-photophosphorylation results in the formation of 

1. NADPH

2. ATP and NADPH

3. ATP, NADPH and O₂

4. ATP

The C₄ plants grow very efficiently in warm climates because they

(1) consume fewer ATP molecules for glucose synthesis

(2) minimize photorespiratory losses

(3) have more efficient chloroplasts

(3) contain enzymes which are not inactivated at high temperatures.

Production of NADPH in a chloroplast takes place during

1. cyclic photophosphorylation

2. non-cyclic photophosphorylation

3. series photophosphorylation

4. substrate level photophosphorylation.

Blackman's law is related to 

(1) respiration

(2) transpiration

(3) root pressure

(4) photosynthesis.

Which of the following statements is correct?

Photorespiration shows formation of 

1. sugar but not ATP

2. ATP but not sugar

3. both ATP and sugar

4. neither ATP nor sugar.

C₄ plants have better productivity because 

(1) C₄ plants absorb more light

(2) C₄ plants absorb more CO₂

(3) C₄ plants does not carry photorespiration

(4) C₄ plants have more amount of RuBisCO.

The first carbon dioxide fixation product of C₄ plant is 

(1) Oxaloacetic acid

(2) ribulose biphosphate

(3) phosphoenol pyruvate

(4) phosphoglyceric acid.

Carbon dioxide is necessary for photosynthesis. The chemical used to remove this gas most effectively from entering a control apparatus is 

1. calcium oxide

2. distilled water

3. potassium hydroxide solution

4. sodium carbonate.