The Question is from neet-botany anatomy-of-flowering-plants monocot-leaf, and it was created by the author B VENKAT

Question

The Kranz anatomy, characteristic of C4 plants, is typically ABSENT in monocot leaves. However, some monocot species exhibit a distinct variation of C4 photosynthesis. Which of the following best describes this variation?

B VENKAT · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [C]
## CONCEPT FRAMEWORK
	**Primary Concept**: Photosynthesis mechanisms in plants
	**Related Topics**: C4 photosynthesis, Kranz anatomy, monocots vs dicots
	**Prerequisites**: Understanding of plant physiology and photosynthetic pathways
## SOLUTION PATHWAY
**Given Information**:
		1. Kranz anatomy is typically absent in monocots.
		2. Some monocots exhibit a variation of C4 photosynthesis.
**Method & Steps**:
	1. Identify the unique adaptation of monocots for C4 photosynthesis.
		Reasoning: Unlike the typical Kranz anatomy seen in many C4 plants, some monocots utilize a different strategy.
	2. Analyze the options provided for characteristics of this variation.
		Working: We look for descriptions that reflect a single-cell adaptation for C4 photosynthesis.
		Key Point: Single-cell C4 photosynthesis allows for the initial carbon fixation and the Calvin cycle to occur in the same cell, which is distinct from the Kranz anatomy.
	3. Select the option that accurately describes this variation.
		Result: The correct answer is option C, which describes single-cell C4 photosynthesis.
		Verification: This option aligns with the known adaptation in some monocots for efficient carbon fixation.
## OPTION ANALYSIS
[A] :x: A modified Kranz anatomy with smaller bundle sheath cells is incorrect as Kranz anatomy is absent in these monocots.
[B] :x: Spatial separation of C4 and C3 cycles within different regions of the mesophyll does not accurately represent the monocot adaptation characterized by single-cell C4.
[C] ✓: Single-cell C4 photosynthesis, where both initial carbon fixation and the Calvin cycle occur within the same mesophyll cell, is correct as it reflects the unique adaptation of certain monocots.
[D] :x: Utilization of PEP carboxylase exclusively in the bundle sheath cells is incorrect because this does not represent the single-cell adaptation characteristic of these monocots.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing Kranz anatomy with single-cell adaptations: Understand the distinct structures and functions of these adaptations.
		2. Overlooking the specific adaptations in monocots versus dicots: Familiarize with examples of each to solidify understanding.
	**Quick Tips**:
		1. Remember that C4 photosynthesis can occur through different anatomical arrangements, not just Kranz anatomy.
		2. Associate specific plant examples with their photosynthetic strategies for better recall.

B VENKAT · Answer

A modified Kranz anatomy with smaller bundle sheath cells

B VENKAT · Answer

Spatial separation of C4 and C3 cycles within different regions of the mesophyll

B VENKAT · Answer

The correct Option is "Single-cell C4 photosynthesis, where both initial carbon fixation and the Calvin cycle occur within the same mesophyll cell"

B VENKAT · Answer

Utilization of PEP carboxylase exclusively in the bundle sheath cells

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