Question

5
Rhizobium nitrogen fixing bacterium is present in symbiotic association with the roots of
leguminous plants like pea. This bacterium converts atmospheric nitrogen into usable form of
nitrogen. Whereas in plants like rose this bacterium is not present. Then from where do they get
nitrogen?
(A) Urea is added to the soil
(B) They can obtain it from other plants
(C) They absorb nitrogen gas from air
(D) Any of these​

Answer 1

Answer:

Nitrogen encourages healthy, vigorous leaf growth. Since a rose’s ability to make flowers resides in its leaves, healthy foliage results in more flowers. Too much nitrogen will result in too much foliage and fewer blooms, while not enough nitrogen results in yellow leaves, stunted growth and smaller blooms.

Rose plants can obtain nitrogen through urea which is added to the soil.

A) Urea is added to the soil

is your answer.

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