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Regarding plants, consider the following sentences:
1. All plants synthesize their food themselves.
2. Plants obtain nitrogen through roots present in the soil.
Which of the above assertions is/are correct?
- a)1 Only
- b)2 Only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Regarding plants, consider the following sentences: 1. All plants sy...
Explanation:
Assertion 1: All plants synthesize their food themselves
Plants have the ability to synthesize their own food through a process called photosynthesis. In this process, plants use sunlight, carbon dioxide, and water to produce glucose and oxygen. This glucose is used by plants as an energy source for various metabolic activities.
During photosynthesis, plants convert light energy into chemical energy, which is stored in the form of glucose. This process takes place in specialized organelles called chloroplasts, which are present in the cells of plant leaves.
Therefore, Assertion 1 is correct.
Assertion 2: Plants obtain nitrogen through roots present in the soil
Nitrogen is an essential element required by plants for their growth and development. However, plants cannot directly use atmospheric nitrogen (N2) as it is in an inert form. They need to convert it into a usable form, such as nitrates (NO3-) or ammonium (NH4+).
The process of converting atmospheric nitrogen into a usable form is called nitrogen fixation. Some plants have a mutualistic relationship with nitrogen-fixing bacteria, which can convert atmospheric nitrogen into a usable form. These bacteria live in the root nodules of leguminous plants, such as soybeans and peas.
Other plants obtain nitrogen from the soil through their roots. The roots of plants have specialized structures called root hairs, which increase the surface area for nutrient absorption. These root hairs absorb nitrates or ammonium ions present in the soil solution.
Therefore, Assertion 2 is correct.
Conclusion
Both assertions 1 and 2 are correct. Plants have the ability to synthesize their own food through photosynthesis, and they obtain nitrogen from the soil through their roots.
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Regarding plants, consider the following sentences: 1. All plants sy...
- There are some plants which do not have chlorophyll. They cannot synthesise food. Like humans and animals such plants depend on the food produced by other plants. They use the heterotrophic mode of nutrition.
- For example: Cuscuta (Amarbel). Plants cannot absorb nitrogen in gaseous form. Soil has certain bacteria that convert gaseous nitrogen into a usable form and release it into the soil. This is absorbed by the plants along with water.
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Regarding plants, consider the following sentences: 1. All plants synthesize their food themselves.2. Plants obtain nitrogen through roots present in the soil.Which of the above assertions is/are correct?a) 1 Onlyb) 2 Onlyc) Both 1 and 2d) Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer?
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