Question:

In $C_{4}$ plants, the bundle sheath cells

Updated On: Jun 15, 2022

have thin walls to facilitate gaseous exchange
have large intercellular spaces
are rich in PEP carboxylase
have a high density of chloroplasts

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The Correct Option is D

Solution and Explanation

In the leaves of $C_{4}$ plants, the vascular bundles are surrounded by bundle sheath of larger parenchymatous cells, which in turn are surrounded by mesophyll cells. Bundle sheath cells have a high density of larger chloroplasts which always lack grana whereas chloroplasts of mesophyll cells are smaller.

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Concepts Used:

Photosynthesis in Higher Plants

Processes Of Photosynthesis in Higher Plants:

Photosynthesis in higher plants involves the following processes:

Light Reaction
Dark Reaction

Light Reaction:

This phenomenon occurs in the presence of light.
The pigment absorbs light and produces energy in the form of ATP.
The process involves- absorption of light, water splitting, the release of oxygen, and formation of ATP and NADPH.

Dark Reaction:

This process occurs in the absence of light in the stroma of the chloroplasts. The following cycles are involved in the process:

Calvin Cycle (C3 Cycle)
C4 Cycle (Hatch and Slack Pathway)

List-I (Pigments)		List-II (Colour in chromatogram)
1	Chlorophyll 'b'	p	Yellow orange
2	Carotenoids	q	Orange red
3	Chlorophyll 'a'	r	Yellow
4	Xanthophylls	s	Blue green
		t	Yellow green