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A wasteful, light-induced respiratory process releasing CO2 is called as

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Important Questions on Photosynthesis in Higher Plants

HARD
Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
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.
EASY
Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
The process which makes a major difference between C3 and C4 plants is:
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Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
Three major ways in which different cells handle pyruvic acid are as follows, except _____
HARD
Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
Describe in brief photorespiration.
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Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
The oxygenation activity of RuBisCO enzyme in photorespiration leads to the formation of
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Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
The correct sequence of cell organelles involved in photorespiration is
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Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration

During photorespiration, the decarboxylation reaction occurs in

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Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
Which of the following process in the mesophyll cells result in the release of CO2 with the utilisation of ATP?
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Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
Photorespiration is favoured by
HARD
Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
The ratio between 2-carbon and 3-carbon intermediates having –NH2 group formed in photosynthetic oxidation cycle is
MEDIUM
Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
Assertion: Photorespiration decreases net photosynthesis.
Reason: The rate of respiration in dark and light is almost the same in all plants.
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Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
C2 cycle is studied in
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Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
Which of the following cell organelles helps in photorespiration?
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Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
Which of the following is incorrectly matched?
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Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
The peroxisome is related to
EASY
Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
Based on the Hatch and Slack pathway, which of the following compounds are found in mesophyll and bundle sheath cells, respectively?
MEDIUM
Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
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
EASY
Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
During photorespiration, the oxygen consuming reaction (s) occur in 
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Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration

Read the following statements on photorespiration and state them as true (T) or false (F).

A. Oxidation of RuBP in the stroma of chloroplast in bright light and high oxygen.

B. Does not utilise ATP and reducing power.

C. Results in the release of CO2 with the utilisation of energy.

D. The biological function of photorespiration is not yet known.

HARD
Biology>Plant Physiology>Photosynthesis in Higher Plants>Photorespiration
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?