The correct option is
C. The production of energy by oxidising essential carbohydrate.
Detailed Explanation:
- Understanding Germination:
-
Germination is the process by which a seed develops into a new plant. This process requires energy, which is primarily derived from the breakdown of stored carbohydrates within the seed.
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Role of Oxygen in Energy Production:
- During germination, seeds undergo cellular respiration, a metabolic process that converts glucose (derived from carbohydrates) into energy (ATP). This process requires oxygen, especially in aerobic respiration, which is the most efficient way to produce energy.
- The general equation for aerobic respiration is:
[
\text{Glucose} + \text{Oxygen} \rightarrow \text{Carbon Dioxide} + \text{Water} + \text{Energy (ATP)}
]
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In the absence of oxygen, seeds can still produce energy through anaerobic respiration, but this process is less efficient and produces less energy.
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Why Option C is Correct:
- Option C specifically states that oxygen is essential for the production of energy by oxidizing carbohydrates. This aligns perfectly with the process of aerobic respiration, where oxygen is used to oxidize glucose (a carbohydrate) to produce ATP, which is crucial for the growth and development of the germinating seed.
Analysis of Other Options:
- Option A: Converting carbohydrate into glucose:
-
This option is incorrect because during germination, seeds typically already contain stored carbohydrates (like starch) that are converted into glucose through enzymatic processes. Oxygen is not directly involved in this conversion; rather, it is involved in the subsequent energy production from glucose.
-
Option B: Transporting energy from part of the plant to another:
-
While energy transport is important in plants, this option does not directly relate to the role of oxygen during the germination process. Energy transport occurs after energy has been produced and is not the primary function of oxygen during germination.
-
Option D: Hydrolysis of protein:
- Hydrolysis of proteins involves breaking down proteins into amino acids, which can occur during germination. However, this process does not primarily require oxygen. Instead, it is more related to the enzymatic activity that breaks down proteins, and oxygen is not a direct factor in this process.
Summary of Key Points:
- Germinating seeds require oxygen for aerobic respiration, which is essential for energy production.
- Oxygen helps oxidize carbohydrates (like glucose) to produce ATP, the energy currency of the cell.
- Other options either misrepresent the role of oxygen or focus on processes that do not directly involve oxygen during germination.
Revision Summary:
- Germination requires energy, primarily from carbohydrates.
- Oxygen is crucial for aerobic respiration, which produces ATP.
- Option C correctly identifies the role of oxygen in energy production.
- Other options misinterpret the processes involved in germination.