Question

Choose the forms in which most plants absorb nitrogen
(i) Proteins
(ii) Nitrates and Nitrites
(iii) Urea
(iv) Atmospheric nitrogen
(a) (i) and (ii) (b) (ii) and (iii)
(c) (iii) and (iv) (d) (i) and (iv)

Answer 1

b) nitrates and nitrogen and urea

Answer 2

Most plants absorb nitrogen in the form of nitrates, nitrites and Urea.

Explanation:

• Plants are considered as autotrophs as they can synthesize their food through the process called photosynthesis.
• They require raw materials such as water, nitrogen, iron, magnesium, and phosphorus for the growth and development of its body.
• Nitrogen is one of the important elements required by the plants as it is involved in protein as well as other important compounds synthesis.
• Usually, plants absorb nitrogen in two forms namely organic form as well as inorganic form.
• Inorganic form of nitrogen is obtained from nitrates and nitrites whereas organic form is obtained from urea.

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