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3 votes
Which part of a plant serves as a home for nitrogen-fixing

cteria?
A. Leaves
B. Nodules
C. Thorns
D. Stems

User ZiggZagg
by
8.4k points

2 Answers

3 votes

Answer:

Nodules

Step-by-step explanation:

apex

User Sassan
by
9.3k points
6 votes

Answer:

Option B) Nodules.

Step-by-step explanation:

  • It is impossible for plants to fix atmospheric nitrogen(nitrogen present in soil) and hence they absorb nitrogen from the soil in the form of nitrates and ammonium.
  • Plant absorbs nitrogen from soil through nodules present on roots.
  • In case of leguminous(pulses) plant roots of the plant form a symbiotic association with nitrogen-fixing bacteria for example- Rhizobium.
  • On the other hand if nitrates is directly absorbed by the plant, it is taken up by nitrate transporters which uses a proton gradient to power the nitrate to get transported.
  • Absorbed nitrogen is transferred from root to shoot by xylem.

Result: Option B) is the correct answer.

User Dmitry Khryukin
by
8.4k points
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