Environmental Science and Ecology - Comprehensive Mock Test 7

Question 61 Medium

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 62 Easy

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 63 Medium

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 64 Medium

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 65 Medium

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 66 Easy

Energy flow in ecosystem is ____?

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

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Question 67 Easy

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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Question 68 Medium

The correct sequence of plants in a hydrosere is ?

A) Oak → Lantana → Volvox → Hydrilla → Pistia → Scirpus B) Oak → Lantana → Scirpus → Pistia → Hydrilla → Volvox C) Volvox → Hydrilla → Pistia → Scirpus → Lantana → Oak D) Pistia → Volvox → Scirpus → Hydrilla → Oak → Lantana

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Question 69 Medium

The rate of formation of new organic matter by rabbit in a grassland, is called ?

A) Net productivity B) Secondary productivity C) Net primary productivity D) Gross primary productivity

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Question 70 Easy

Niche is defined as the ?

A) Position of species in a community in relation to other species B) Place where organism lives C) Place where organism lives and performs its duty D) Place where population perform their duties

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