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.
Related Questions to study
Biology
Select the correct statement.
Select the correct statement.
BiologyGrade-10
Biology
Which of the following processes is primarily responsible for the majority of environmental issues caused by excess nitrogen and phosphorus entering streams, lakes, and oceans?
Which of the following processes is primarily responsible for the majority of environmental issues caused by excess nitrogen and phosphorus entering streams, lakes, and oceans?
BiologyGrade-10
Biology
From which of the following a large portion of the phosphorus used in fertilizer is derived?
From which of the following a large portion of the phosphorus used in fertilizer is derived?
BiologyGrade-10
Biology
Identify the cycle pictured.
Identify the cycle pictured.
BiologyGrade-10
Biology
What forms in the geosphere as a result of decaying shells?
What forms in the geosphere as a result of decaying shells?
BiologyGrade-10
Biology
What phenomenon might bring phosphorus deposited from guano near to the coast that has been dissolved in the water by runoff and deposited on the ocean bottom to the surface?
What phenomenon might bring phosphorus deposited from guano near to the coast that has been dissolved in the water by runoff and deposited on the ocean bottom to the surface?
BiologyGrade-10
Biology
How do decomposers return carbon to the atmosphere after breaking down organic matter?
How do decomposers return carbon to the atmosphere after breaking down organic matter?
BiologyGrade-10
Biology
