Same chapter3 marksDifficulty: Medium
Describe cyclic and non-cyclic photophosphorylation.
Photosynthesis and Respiration in Plants
3 marksDifficulty: Medium
State three differences between C3 and C4 plants.
Original Khojo Papers practice question — not from a past board paper.
Answer
In a C3 plant the first stable product is a three-carbon compound, 3-phosphoglyceric acid; in a C4 plant it is a four-carbon compound, oxaloacetic acid. C3 plants have no Kranz anatomy while C4 plants do. C3 plants photorespire heavily and are less efficient at high temperature; C4 plants have almost no photorespiration and are better adapted to hot, dry conditions.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Rice and wheat are C3 plants; maize and sugarcane are C4.
Related questions
From the same topic and chapter, at a similar level.
Same chapter3 marksDifficulty: Medium
What is the respiratory quotient, and what values does it take for carbohydrate, fat and protein?
Photosynthesis and Respiration in Plants
Same chapter3 marksDifficulty: Medium
How many molecules of ATP are produced by the complete aerobic oxidation of one molecule of glucose, and where does each stage occur?
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Same chapter3 marksDifficulty: Medium
What is photorespiration and why is it regarded as wasteful?
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Same subject3 marksDifficulty: Medium
State three characteristics of bryophytes and name one example.
Plant Kingdom
Same subject3 marksDifficulty: Medium
State three differences between gymnosperms and angiosperms.
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