The Question is from neet-botany respiration-in-plants , and it was created by the author B VENKAT

Question

Which of the following statements BEST describes the relationship between photosynthesis and respiration in plants at night?

B VENKAT · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
 **Primary Concept**: Photosynthesis and Respiration in Plants
 **Related Topics**: Plant Metabolism, Gas Exchange, Cellular Respiration
 **Prerequisites**: Understanding of photosynthesis and respiration processes.
## SOLUTION PATHWAY
**Given Information**:
  The question focuses on the relationship between photosynthesis and respiration in plants during the night.
  Photosynthesis requires sunlight.
**Method & Steps**:
 1. Analyze Photosynthesis:
  Reasoning: Photosynthesis is the process by which plants convert light energy into chemical energy in the form of glucose.  This process requires sunlight, water, and carbon dioxide ($CO_2$) as reactants, producing glucose ($C_6H_{12}O_6$) and oxygen ($O_2$) as products.  At night, there is no sunlight, so photosynthesis stops.
  Formula/Rule: $6CO_2 + 6H_2O + Light ightarrow C_6H_{12}O_6 + 6O_2$
 2. Analyze Respiration:
  Reasoning: Respiration is the process by which plants (and all living organisms) break down glucose to release energy in the form of ATP. This process occurs continuously, day and night, and requires oxygen ($O_2$) and produces carbon dioxide ($CO_2$) and water ($H_2O$).
  Formula/Rule: $C_6H_{12}O_6 + 6O_2 ightarrow 6CO_2 + 6H_2O + ATP$
 3. Combine Processes at Night:
  Reasoning: Since photosynthesis ceases at night due to lack of sunlight, the plant relies on stored glucose (from photosynthesis during the day) as a source of energy for respiration.  Respiration continues, consuming stored organic molecules and releasing $CO_2$.
  Result: Option D accurately describes this process.
  Verification: Options A, B, and C are incorrect because they either incorrectly state that photosynthesis continues at night or that respiration ceases at night.
 ## OPTION ANALYSIS
A :x: Incorrect. Photosynthesis stops at night.
B :x: Incorrect. Photosynthesis ceases at night.
C :x: Incorrect. Respiration continues at night.
D ✓: Correct. Photosynthesis ceases, and respiration continues, using stored glucose and releasing CO2.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing photosynthesis and respiration: Understanding the reactants and products of each process is crucial.
  2.Assuming both processes operate simultaneously at the same rate at night:  They don't; photosynthesis stops at night.
 **Quick Tips**:
  1.Remember that photosynthesis requires light, whereas respiration is a continuous process.
  2.Relate the reactants and products of photosynthesis to the reactants and products of respiration to understand the interconnectedness of these processes.

B VENKAT · Answer

Photosynthesis and respiration both cease, maintaining a neutral balance of gases.

B VENKAT · Answer

Photosynthesis continues at a reduced rate, while respiration increases to compensate.

B VENKAT · Answer

Photosynthesis ceases, and respiration also ceases to conserve energy.

B VENKAT · Answer

The correct Option is "Photosynthesis ceases, and respiration continues, consuming stored organic molecules and releasing CO2."

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