EASY
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The correct sequence of cell organelles involved in photorespiration is

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Important Questions on Photosynthesis in Higher Plants

EASY
The process which makes a major difference between C3 and C4 plants is:
EASY
Three major ways in which different cells handle pyruvic acid are as follows, except _____
MEDIUM

Which among the following statements are correct?
(i) The quantum yield of photosynthesis decreases with an increase in temperature in C3 plants, as compared to C4 plants.
(ii) The first stable product in C3 pathway is phosphoglycerate, whereas in the C4 pathway it is oxaloacetate.
(iii) C3 pathway is present only in C3 plants and C4 pathway is present in all plants.

(iv) The rate of photorespiration is very high in C4 plants and very low in C3 plants.

HARD
Choose the correct statements.
(A) Photorespiration is the synthesis of neither sugar nor ATP rather the release of O2.
(B) CAM metabolism is an alternative to C3 and C4 pathways of CO2 fixation in plants in dry and hot climates.
(C) Bundle sheath cells are having many chloroplasts, thick walls with no intercellular space.
(D) After World War II photosynthetic studies were exemplary.
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The oxygenation activity of RuBisCO enzyme in photorespiration leads to the formation of
MEDIUM
C4 plants are more efficient in photosynthesis than C3 plants due to:
HARD
Read the following statements (A-D) carefully.

A. Causes the 25% loss of CO2 fixed by Calvin- Benson cycle.
B. Operates in chloroplasts, leaf peroxisomes and mitochondria.
C. Absent in photosynthetic bacteria.
D. Does not produce ATP.

Which light-dependent phenomenon has been described by the above statements?
MEDIUM
Select the incorrect statement in relation to photorespiration.
HARD
The ratio between 2-carbon and 3-carbon intermediates having NH2 group formed in photosynthetic oxidation cycle is
MEDIUM
The substrate for photorespiration is?
EASY

During photorespiration, the decarboxylation reaction occurs in

EASY
Organelles associated with photorespiration are:
MEDIUM
During photorespiration, the oxygen-consuming reaction(s) occur in
MEDIUM
Match the following with correct combination.
 
Column-I Column- II
 (A) Carboxylation  (1) Oxygen evolution
 (B) Phosphorylation  (2) Photorespiration
 (C) Photolysis of water  (3) RuBisCO
 (D) Phosphoglycolate  (4) Chemosynthesis
 (E) Nitrosomonas  (5) ATP