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In leaves of C₄ plants malic acid synthesis during CO₂ fixation occurs in
Options
(a) epidermal cells
(b) mesophyll cells
(c) bundle sheath
(d) Guard cells
Correct Answer:
mesophyll cells
Explanation:
In leaves of C₄ plants, malic acid synthesis during CO₂ fixation occurs in mesophyll cells. The mesophyll cells perform C₄ cycle and the cells of bundle sheath perform C₃ cycle. CO₂ taken from the atmosphere is accepted by phosphoenol pyruvic acid (PEP)present in the chloroplasts of mesophyll cell of these leaves, leading to the formation of a 4-C compound, oxaloacetic acid (OAA). This acid is converted to another 4-C acid, the malic acid which enters into the chloroplast of bundle sheath cells and these undergoes oxidative decarboxylation yielding pyruvic acid (3C- compound ) and CO₂.
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Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Photosynthesis and Plant Growth
(26)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which enzyme joins DNA fragments?
- When you hold your breath, which of the following gas changes in blood would first lead
- Pollination which occur in closed flowers is known as
- Which national park is the new home of the Indian one-horned rhinoceros?
- Which of the changes occur in the plain dwellers when they move to high altitudes
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Photosynthesis and Plant Growth (26)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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