The Question is from neet-botany photosynthesis-in-higher-plants , and it was created by the author D VINOD

Question

A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilization. In which of the following physiological groups would you assign this plant?

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: B
## CONCEPT FRAMEWORK
	**Primary Concept**: Plant Photosynthetic Pathways
	**Related Topics**: Photorespiration, Water Use Efficiency, Nitrogen Metabolism
	**Prerequisites**: Basic understanding of C3, C4, and CAM photosynthesis.
## SOLUTION PATHWAY
**Given Information**:
	* Plant avoids photorespiratory losses
	* Improved water use efficiency
	* High rates of photosynthesis at high temperatures
	* Improved efficiency of nitrogen utilization
**Method & Steps**:
	1. **Analyze the characteristics**: Each characteristic points to a specific adaptation related to the efficiency of photosynthesis under different environmental conditions.
		Reasoning: Photorespiration is a wasteful process that C4 plants minimize through their unique anatomy and carbon fixation mechanism. C4 plants also have higher water use efficiency and better performance under high temperature conditions.
	2. **Evaluate the plant groups**: C3 plants are generally not efficient under high temperatures and have photorespiration losses. CAM plants have high water use efficiency but are not known for high photosynthetic rates. Nitrogen fixers are related to nitrogen metabolism, not directly related to photosynthetic pathways.
		Working: C4 plants are specifically adapted to minimize photorespiration, have high water use efficiency, and perform well at high temperatures. Nitrogen utilization is improved in C4 plants as well due to efficient photosynthesis.
	3. **Determine the best match**: Based on the above analysis, C4 plants best fit the provided characteristics.
		Result: C4 plants are the best fit.
		Verification: The listed characteristics are all defining features of C4 plants.
 ## OPTION ANALYSIS
[A] :x: C3 plants do not avoid photorespiration and are less efficient under high temperatures.
[B] ✓: C4 plants exhibit the described traits.
[C] :x: CAM plants are adapted for water conservation, not high rates of photosynthesis at high temperatures.
[D] :x: Nitrogen fixers are related to nitrogen metabolism, not directly to the photosynthetic process described.
 ## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing CAM and C4: CAM plants are adapted to dry conditions, but they have lower photosynthetic rates during the day. C4 plants have high photosynthetic rates at high temperatures and low photorespiration.
		2. Not considering all characteristics: Each characteristic provided is an important clue.  Consider how each trait is associated with each plant type.
	**Quick Tips**:
		1. Remember C4: C4 plants are good at high temps, high light, and low water.
		2.  Photorespiration: Only C3 plants are significantly affected by photorespiration.

D VINOD · Answer

${C_3}$

D VINOD · Answer

The correct Option is "${C_4}$"

D VINOD · Answer

${\rm{CAM}}$

D VINOD · Answer

Nitrogen fixer

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