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What happens to nitrogen in the soil to make it usable for plants?
- a)It is converted by sunlight
- b)It is absorbed directly from the air
- c)It is converted into a soluble form by bacteria
- d)It is synthesized from carbon dioxide
Correct answer is option 'C'. Can you explain this answer?
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What happens to nitrogen in the soil to make it usable for plants?a)It...
Nitrogen in the soil is converted into a usable, soluble form by bacteria, such as Rhizobium, which helps plants utilize nitrogen for growth.
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What happens to nitrogen in the soil to make it usable for plants?a)It...
**Conversion of Nitrogen in Soil**
Nitrogen, an essential nutrient for plant growth, exists in the soil in various forms, but plants can only uptake it in a specific form. To make nitrogen usable for plants, it needs to be converted into a soluble form that plants can absorb.
**Role of Bacteria**
- Bacteria play a crucial role in this process by converting atmospheric nitrogen (N2) into a form that plants can use, a process known as nitrogen fixation.
- Some soil bacteria, like Rhizobium species, are capable of converting atmospheric nitrogen into ammonia (NH3) through a process called biological nitrogen fixation.
- Other soil bacteria, like Azotobacter and Azospirillum, can convert atmospheric nitrogen into nitrates (NO3-) through a process called nitrification.
**Conversion into Soluble Form**
- Once nitrogen is fixed by these bacteria, it is converted into a soluble form such as ammonia or nitrates, which can be readily absorbed by plant roots.
- This conversion process makes nitrogen available for plants to use in their growth and development.
In conclusion, nitrogen in the soil is made usable for plants through the action of specific bacteria that convert atmospheric nitrogen into a form that plants can absorb. This process of nitrogen fixation and conversion into a soluble form is essential for ensuring that plants have access to an adequate nitrogen supply for their growth.
Nitrogen, an essential nutrient for plant growth, exists in the soil in various forms, but plants can only uptake it in a specific form. To make nitrogen usable for plants, it needs to be converted into a soluble form that plants can absorb.
**Role of Bacteria**
- Bacteria play a crucial role in this process by converting atmospheric nitrogen (N2) into a form that plants can use, a process known as nitrogen fixation.
- Some soil bacteria, like Rhizobium species, are capable of converting atmospheric nitrogen into ammonia (NH3) through a process called biological nitrogen fixation.
- Other soil bacteria, like Azotobacter and Azospirillum, can convert atmospheric nitrogen into nitrates (NO3-) through a process called nitrification.
**Conversion into Soluble Form**
- Once nitrogen is fixed by these bacteria, it is converted into a soluble form such as ammonia or nitrates, which can be readily absorbed by plant roots.
- This conversion process makes nitrogen available for plants to use in their growth and development.
In conclusion, nitrogen in the soil is made usable for plants through the action of specific bacteria that convert atmospheric nitrogen into a form that plants can absorb. This process of nitrogen fixation and conversion into a soluble form is essential for ensuring that plants have access to an adequate nitrogen supply for their growth.
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What happens to nitrogen in the soil to make it usable for plants?a)It is converted by sunlightb)It is absorbed directly from the airc)It is converted into a soluble form by bacteriad)It is synthesized from carbon dioxideCorrect answer is option 'C'. Can you explain this answer?
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What happens to nitrogen in the soil to make it usable for plants?a)It is converted by sunlightb)It is absorbed directly from the airc)It is converted into a soluble form by bacteriad)It is synthesized from carbon dioxideCorrect answer is option 'C'. Can you explain this answer? for Class 7 2025 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about What happens to nitrogen in the soil to make it usable for plants?a)It is converted by sunlightb)It is absorbed directly from the airc)It is converted into a soluble form by bacteriad)It is synthesized from carbon dioxideCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What happens to nitrogen in the soil to make it usable for plants?a)It is converted by sunlightb)It is absorbed directly from the airc)It is converted into a soluble form by bacteriad)It is synthesized from carbon dioxideCorrect answer is option 'C'. Can you explain this answer?.
What happens to nitrogen in the soil to make it usable for plants?a)It is converted by sunlightb)It is absorbed directly from the airc)It is converted into a soluble form by bacteriad)It is synthesized from carbon dioxideCorrect answer is option 'C'. Can you explain this answer? for Class 7 2025 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about What happens to nitrogen in the soil to make it usable for plants?a)It is converted by sunlightb)It is absorbed directly from the airc)It is converted into a soluble form by bacteriad)It is synthesized from carbon dioxideCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What happens to nitrogen in the soil to make it usable for plants?a)It is converted by sunlightb)It is absorbed directly from the airc)It is converted into a soluble form by bacteriad)It is synthesized from carbon dioxideCorrect answer is option 'C'. Can you explain this answer?.
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