Question

Identify the correct match.

$\begin{array}{cc}\text{COLUMN I}& \text{COLUMN II}\\ \text{(a) Moss}& \text{(i) nitrogen fixing bacteria}\\ \text{(b) Humus}& \text{(ii) helps in soil formation}\\ \text{(c) Rhizobium}& \text{(iii)makes soil more porous}\end{array}$

• A. (a)-(iii), (b)-(i),(c)-(ii)
• B. (a)-(ii), (b)-(iii),(c)-(i)
• C. (a)-(ii), (b)-(i),(c)-(iii)
• D. (a)-(iii), (b)-(ii),(c)-(i)

Answer 1

The correct option is B (a)-(ii), (b)-(iii),(c)-(i)

Rhizobium is a soil bacteria that fixes nitrogen once they found a base inside root nodules of legumes. In other terms, they can be defined as legume root-nodule bacteria.
Microorganisms in forest feed upon the dead plant and animal tissues and convert them into a dark coloured substance called humus. The presence of humus ensures that soil become more porous and allows water and air to penetrate deep underground. Moss is a small flowerless plant that grows on the surface of rocks and influence the formation of soil.