Environmental Science and Ecology - Comprehensive Mock Test 6

Question 51 Easy

Among the following, a secondary pollutant is ?

A) PAN B) SO2 C) CO D) Aerosol

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Question 52 Medium

Addition of phosphates and nitrates/fertilizers into water leads to ?

A) Increased algal growth B) Nutrient enrichment (eutrophication) C) Reduced algal growth D) Increased growth of decomposers

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Question 53 Medium

Acid rain is caused by increase in the atmospheric concentration of ?

A) Ozone and dust B) SO2 and NO2 C) SO3 and CO D) CO2 and CO

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Question 54 Hard

According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometers) of the air pollutants is responsible for greatest harm to human health?

A) 5.2 - 2.5 B) 2.5 or less C) 1.5 or less D) 1.0 or less

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Question 55 Easy

A disease affecting industrial workers is ?

A) Silicosis B) Fluorosis C) Asthma D) None of these

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Question 56 Medium

Which one of the following pairs of gases are the major causes of Greenhouse Effect?

A) CO2 and N2O B) CO2 and O3 C) CO2 and CO D) CFCs and SO2

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Question 57 Medium

The pyramid of energy is always upright for any ecosystem. This situation indicates the fact that ?

A) Herbivores have a better energy conversion efficiency than carnivores. B) Producers have the lowest energy conversion efficiency. C) Carnivores have better energy conversion efficiency than herbivores. D) Energy conversion efficiency is the same in all trophic levels.

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Question 58 Medium

In a comparative study of grassland ecosystem and pond ecosystem, it may be observed that ?

A) primary and secondary consumers are similar B) the abiotic components are almost similar C) the biotic components are almost similar D) both biotic and abiotic components are different

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Question 59 Medium

Which one of the following is correct matching of a plant, its habit and the forest type where it normally occurs?

A) Prosopis, tree, scrub B) Saccharum, grass, forest C) Shorea robusta, herb, tropical rain forest D) Acacia catechu, tree, coniferous forest

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Question 60 Medium

The average trophic efficiency of transfer of energy from one trophic level to the. higher trophic level is called ?

A) Linderman's trophic efficiency rule B) Exploitation efficiency C) Assimilation. Efficiency D) Gross primary production

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