Question

Match the following and select the correct option.

Answer 1

Detrivore is an organism which breaks down the detritus. They obtain nutrients from detritus or dead organic matter. Earthworm is an example of detrivore. Pioneer species are species which colonized first in the previously biodiverse steady-state ecosystems. They are the first stage of succession. The benefit from the ecosystem to human being is called as ecosystem service. Pollination occur through self fertilization or by wind, water or animal vectors. Humans depend on pollinator to sustain the ecosystem service. Natality is defined as the gross birth rate. It influences greatly on the population growth.

Thus, the correct answer is 'A-2, B-1, C-4, D-3.'