Which one of the following statements is correct?
Correct answer: A. Legumes fix nitrogen only through the specialized bacteria that live in their roots.
- A. Legumes fix nitrogen only through the specialized bacteria that live in their roots.
- B. Legumes fix nitrogen independently of the specialized bacteria that live in their roots.
- C. Legumes fix nitrogen only through specialized bacteria that live in their leaves.
- D. Legumes are incapable of fixing nitrogen.
Explanation
The nitrogen-fixing ability of leguminous plants is not a property of the plants as such but results from infection of their roots by bacteria in the soil, leading to the formation of nodules. These organisms are Gram-negative motile rods that are classified in the genus Rhizobium.
Last updated
Related questions
A bamboo plant growing in a fir forest will occupy which trophic level?
A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is
A common biocontrol agent for the control of plant diseases is
A common indicator organism of water pollution is:
A dental disease characterized by mottling of teeth is due to the presence of which chemical element in drinking water?