Question

Explain how does a blue green algae help in increasing the fertility of soil

Answer 1

Answer: blue - green algae are nitrogen fixing bacteria.

Explanation:so by fixation of nitrogen they increase the fertility of soil ...

Hope this helps u!!

Answer 2

$\huge\sf{\underline{Answer:}}$

$\bullet$ Blue-green algae help in increasing the fertility of the soil.

$\bullet$ Blue-green algae which is also known as Cyanobacteria act as a biofertilizer.

$\bullet$ These biofertilizers are introduced in the soil. It helps the nutrients to replenish in the soil. And then, they are taken in, by the plants.

$\bullet$ The atmospheric nitrogen is fixed by the Bacteria, since they have that ability to do so. Rhizobium (under Bacteria category), also have the ability to fix atmospheric nitrogen.

$\bullet$ It provides the nutrients to the soil, which are then taken up by the plants.

$\sf{\underline{Note:}}$ Bacteria also helps in decomposition of organic wastes.