From the sources of plant nutrients availability in soil, which of the following statements are correct:
Correct answer: B. All of the above
- A. The plant absorbs carbon as carbondioxides directly from the atmosphere.
- B. All of the above
- C. Air & water is the source of oxygen & the chief source of soil nitrogen is organic matter & when organic matter decomposes it gives ammonia.
- D. Water is the source of hydrogen
Explanation
Plants obtain carbon mainly from atmospheric carbon dioxide, hydrogen from water, and oxygen from air and water. Soil organic matter is a major nitrogen source because decomposition releases ammonia and other usable nitrogen forms.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Soil Science
377 free Soil Science MCQs from Agriculture, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Agriculture questions like this
Agriculture is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Soil Science questions
Nitrogen & sulphur dioxide liberate from motor vehicles & industries. Nitrogen & Sulphur gases dissolve in the water vapour of atmosphere & form nitric & sulphuric acid. This rain water falls on soil as__________ & contaminates soil also:
Moderately toxic compound:_________?
Soils are also contaminated by a number of inorganic compounds which are also high toxic to human & other animals & are extremely poisonous may include:
Immobile nutrient in soil is:_________?
What happens when an saline-alkaline soil is reached with water:
Azotobacter fixes atmospheric nitrogen in the soil by:__________?