Question

Match the following and select the correct option

Column I	Column II
(a) Earthworm	(i) Pioneer species
(b) Succession	(ii) Detritivore
(c) Ecosystem service	(iii) Natality
(d) Population growth	(iv) Pollination

• A. a - iii, b - ii, c - iv, d - i
• B. a - iv, b - i, c - iii, d - ii
• C. a - i, b - ii, c - iii, d - iv
• D. a - ii, b - i, c - iv, d - iii

Answer 1

The correct option is D a - ii, b - i, c - iv, d - iii

Earthworm - Detritivore

Detritivores are organisms which depend on dead and decaying matter for their food. Common detritivores in the ecosystem are earthworms.

Succession - Pioneer species

Succession is a gradual process that involves a sequential change in the composition of species leading to the establishment of a stable community. The first community that colonises the barren land is called pioneer species.

Ecosystem service - Pollination

Ecosystem services refers to the products of ecosystem processes that have been linked directly to the benefit of human well-being. Such services include pollination of crops, soil formation etc.

Pollination is the transfer of pollen grains from the anther to the stigma of a flower.

Population growth - Natality

Natality is the ratio of number of births to the population size. Population growth is the increase in the number of people in a population. High rate of natality supports the population growth.

Hence the correct option is
a. a - ii, b - i, c - iv, d - iii