Plant Physiology - Respiration in Plants

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Q1. Which of the following is NOT a stage of cellular respiration? (2021)

Solution:

The Calvin cycle is part of photosynthesis, not cellular respiration.

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Q2. What is the main purpose of respiration in plants? (2023)

Solution:

The main purpose of respiration in plants is to release energy from glucose, which is essential for various cellular processes.

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Q3. Which of the following is NOT a product of respiration? (2021)

Solution:

Glucose is not a product of respiration; it is a reactant that is broken down during the process.

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Q4. What is the main substrate for respiration in plants? (2023)

Solution:

Glucose is the main substrate for respiration in plants, as it is broken down to release energy.

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Q5. Which of the following is NOT a product of cellular respiration? (2021)

Solution:

Glucose is not a product of cellular respiration; it is a reactant that is broken down to produce ATP, water, and carbon dioxide.

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Q6. Which of the following statements about respiration in plants is true? (2022)

Solution:

Respiration in plants produces more energy than fermentation, as it fully oxidizes glucose in the presence of oxygen.

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Q7. What is the net gain of ATP molecules from one molecule of glucose during aerobic respiration? (2023)

Solution:

The net gain of ATP molecules from one molecule of glucose during aerobic respiration is approximately 30-32 ATP.

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Q8. In which part of the plant does most respiration occur? (2020)

Solution:

Most respiration occurs in the roots, where energy is needed for nutrient uptake and growth.

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Q9. Which of the following processes occurs during aerobic respiration in plants? (2020)

Solution:

Glycolysis is the first step in aerobic respiration, where glucose is broken down to produce energy.

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Q10. What is the primary site of respiration in plant cells? (2021)

Solution:

The primary site of respiration in plant cells is the mitochondria, where ATP is produced through cellular respiration.