The Question is from neet-botany photosynthesis-in-higher-plants , and it was created by the author Mr. NARESH KUMAR K

Question

Blackman’s law of limiting factor is applicable to

Mr. NARESH KUMAR K · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
	**Primary Concept**: Limiting Factors in Photosynthesis
	**Related Topics**: Photosynthesis, Plant Physiology, Blackman's Law of Limiting Factors
	**Prerequisites**: Understanding of photosynthesis and factors affecting its rate.
## SOLUTION PATHWAY
**Given Information**:
	Blackman's law of limiting factors states that the rate of a physiological process is limited by the factor that is in shortest supply.
**Method & Steps**:
	1. **Understanding Blackman's Law:** This law specifically applies to processes where multiple factors can influence the rate.  It states that the rate is determined by the factor that is furthest from its optimal value.
	Reasoning: Photosynthesis is influenced by light intensity, carbon dioxide concentration, and temperature.
	2. **Application to Photosynthesis:**  Photosynthesis is a complex process affected by light, $CO_2$, temperature, and water availability.  Any of these can become a limiting factor.
	Working:  If light is low, increasing $CO_2$ won't significantly increase photosynthesis.  Similarly, if $CO_2$ is low, increasing light won't have much effect.
	Key Point: The 'limiting factor' is the one that needs to be addressed to increase the rate of photosynthesis.
	3. **Identifying the Correct Application:** Blackman's law is directly related to photosynthesis.
	Result: Photosynthesis is the correct application of Blackman's law.
	Verification:  The other options are physiological processes, but Blackman's law is most commonly and directly associated with photosynthesis.
## OPTION ANALYSIS
[A] Respiration :x: Respiration is influenced by substrate availability and oxygen, but Blackman's law isn't the primary principle used to describe its limitations.
[B] Transpiration :x: Transpiration is primarily driven by environmental factors like humidity and temperature, not typically explained by Blackman's law.
[C] Photosynthesis ✓: Photosynthesis is directly and specifically explained by Blackman's law of limiting factors.
[D] Protein synthesis :x: While resource availability can affect protein synthesis, Blackman's law isn't the primary framework used to understand its limitations.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing Blackman's law with Liebig's law of the minimum: Liebig's law focuses on the single most limiting nutrient for growth, while Blackman's law considers multiple factors affecting a process's rate.
			How to avoid: Remember that Blackman's law deals with the factor furthest from its optimum, affecting the *rate* of a process (like photosynthesis), not just overall growth.
		2. Thinking Blackman's law applies only to light: While light can be a limiting factor, Blackman's law considers *any* factor that can limit photosynthesis, including $CO_2$, temperature, and water.
			How to avoid: Remember the broad scope of Blackman's law; it applies to any limiting factor in photosynthesis.
	**Quick Tips**:
		1. Think of a barrel with staves of different lengths. The shortest stave determines how much water the barrel can hold - similar to how the limiting factor determines the rate of photosynthesis.
		2. Remember that Blackman’s law is about the factor that is in 'shortest supply' relative to its optimum level for photosynthesis.

Mr. NARESH KUMAR K · Answer

Respiration

Mr. NARESH KUMAR K · Answer

Transpiration

Mr. NARESH KUMAR K · Answer

The correct Option is "Photosynthesis"

Mr. NARESH KUMAR K · Answer

Protein synthesis

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