Multiple Choice
How do nitrogen-fixing microbes first become symbiotic with their plants?
A) They are carried in the seed.
B) They are attracted by chemicals released by the root.
C) They move in via openings in the plant cell walls.
D) They move into the vascular system and multiply.
E) They enter root nodules previously produced by the plant.
Correct Answer:
Verified
Correct Answer:
Verified
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