Question

Which of the following plants is used as biofertiliser [CET 2005]
A) Nostoc
B) Funaria
C) Volvox
D) Rhizopus

Answer 1

Hey mate...
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Correct Answer: A

Reason:----

                 Nostoc is nitrogen fixing cyanobacteria. It contains a special cell called heterocyst which has the capacity to fix the atmospheric nitrogen.

Answer 2

A) Nostoc is the plant that is used as a biofertilizer.

Biofertilizers are mostly nitrogen-fixing microbes that enrich the soil with nutrients. They will be free-living or symbiotic. Biofertilizers enhance the quality of plants and soil.

• Nostoc is free-living nitrogen-fixing cyanobacteria. They fix atmospheric nitrogen, in specialized cells called heterocysts, into ammonia, which can then be used or converted to an appropriate form for plant growth
• Nostoc belongs to the cyanobacteria genus, and it may be used as a biofertilizer.
• It's also called the eubacterium.

Funaria is called a genus of moss that grows in dense patches during the rainy season. Volvox could be a genus of freshwater chlorophyte or green algae. Rhizopus may be a genus of filamentous fungi which mostly grows on dead organic matter.

Thus, only Nostoc is used as a biofertilizer.

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