Biology
Grade-10
Easy
Question
Which of the following does not have symbiotic nitrogen fixing bacteria?
- Cycas
- Azolla
- Gnetum
- Anthoceros
Hint:
Examples of symbiotic nitrogen-fixing bacteria include Rhizobium, which is associated with plants in the pea family, and various Azospirillum species, which are associated with cereal grasses.
The correct answer is: Gnetum
- Nitrogen fixation is a necessary process that fixes atmospheric nitrogen
- The roots of some plants have root microbe association that helps in nitrogen fixation.
- Azolla, Anthoceros, and cycas are symbiotic N2-fixing bacteria except for Gnetum.
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