Question:
A prokaryotic autotrophic nitrogen fixing symbiont is found in
A prokaryotic autotrophic nitrogen fixing symbiont is found in
Updated On: Jun 23, 2024
- Alnus
- Cycas
- Cicer
- Pisum.
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The Correct Option is B
Solution and Explanation
Cycas forms facultative symbiotic asssociation with autotrophic nitrogen fixing cyanobacteria. Cycas provides fix carbon and a stable environment to the cyanobacteria in exchange for fixed nitrogen. These cyanobacteria are endosymbionts and live within the roots of Cycas. In addition to normal roots, Cycas develops specialised symbiotic organs at a young age called precoralloid roots which transform into coralloid roots upon successful colonisation by cyanobacteria.
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Concepts Used:
Mineral Nutrition
The naturally occurring inorganic nutrient found in the soil and food that is necessary for the proper functioning of animal and plant bodies is defined as nutrition. Minerals are vital elements essential for the body.
Read More: Mineral Nutrition
Role of Nutrients:
- Balancing function
- Maintenance of osmotic pressure
- Influencing the pH of the cell sap
- Construction of the plant body
- Catalysis of the biochemical reaction
- Effects of Toxicity