Environmental Science and Ecology - Mock Test 26

Question 251

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 252

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 253

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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Question 254

Which is the reason for highest biomass in aquatic ecosystem?

A) Benthonic and brown algae B) Sea grass, and slime molds C) Nanoplankton, blue green algae, green algae D) Diatoms

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Question 255

Which one of the following pairs in mismatched?

A) Tundra - permafrost B) Coniferous forest - evergreen trees C) Savanna - acacia trees D) Prairie - epiphytes

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Question 256

These belong to the category of primary consumers ?

A) Snakes and Frogs B) Insects and cattle C) Eagle and snakes D) Water insects

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Question 257

Which of the following is an example of man-made ecosystem?

A) Tissue culture B) Aquarium C) Herbarium D) Forest

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Question 258

Which one of the following is one of the characteristics of a biological community?

A) Sex-ratio B) Stratification C) Natality D) Mortality

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Question 259

Energy flow in ecosystem is ____?

A) Bidirectional B) Multidirectional C) Unidirectional D) All around

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Question 260

Which of the following is false?

A) Rate of succession is faster in secondary succession. B) Quantity of biomass in a trophic level at a particular period is called as standing crop. C) The energy content in a trophic level is determined by considering a few individuals of a species in that trophic level. D) The succession that occurs in newly cooled lava is called primary succession.

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