Question
Biology Question on Nutrition
Which of the following statements about Rhizobium legume nodule formation is not true ?
A
Rhizobium can only fix nitrogen after it becomes a bacteroid within a root cortex cell.
B
Rhizobium induces invagination of root hairs.
C
Within an infection thread, Rhizobium is still extracellular to the plant.
D
The infection thread can fuse with any root cell of an appropriate legume species.
Answer
The infection thread can fuse with any root cell of an appropriate legume species.
Explanation
Solution
Answer (d) The infection thread can fuse with any root cell of an appropriate legume species.