Ecology and Environment (NEET Biology): Questions 125 - 132 of 227

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Question number: 125

» Ecology and Environment » Ecosystem » Patterns, Components

MCQ▾

Question

Under what condition, the upright pyramid of biomass becomes inverted?

Choices

Choice (4) Response

a.

Three ecosystem

b.

Terrestrial ecosystem

c.

Pond ecosystem

d.

Grassland ecosystem

Question number: 126

» Ecology and Environment » Ecosystem » Nutrient Cycling

MCQ▾

Question

The conversion of nitrate to nitrous oxide and nitrogen gas is termed as

Choices

Choice (4) Response

a.

Denitrification

b.

Nitrogen-fixation

c.

Nitrification

d.

Question does not provide sufficient data or is vague

Question number: 127

» Ecology and Environment » Environmental Issues » Air Pollution and Its Control

MCQ▾

Question

Which of the following does not cause pollution?

Choices

Choice (4) Response

a.

Automobile

b.

Thermal power project

c.

Nuclear energy project

d.

Hydroelectric project

Question number: 128

» Ecology and Environment » Environmental Issues » Air Pollution and Its Control

MCQ▾

Question

Excessive inhalation of manganese causes

Choices

Choice (4) Response

a.

Gout

b.

Pneumonia

c.

Anemia

d.

Diphtheria

Question number: 129

» Ecology and Environment » Environmental Issues » Agrochemicals and Their Effects

MCQ▾

Question

Cyanosis is caused by

Choices

Choice (4) Response

a.

Chromium

b.

Carbon dioxide

c.

Chlorine

d.

Nitrate concentration

Question number: 130

» Ecology and Environment » Biodiversity and Its Conservation » Endangered Organisms

MCQ▾

Question

Which of the following species is critically endangered?

Choices

Choice (4) Response

a.

Panthera leo persica

b.

Chelonia mydas

c.

Python molurus

d.

Siberian crane

Question number: 131

» Ecology and Environment » Organisms and Environment » Habitat and Niche

MCQ▾

Question

Which one statement is correct regarding man made ecosystem?

Choices

Choice (4) Response

a.

They are poor in diversity.

b.

All are correct

c.

They are highly efficient.

d.

They are vulnerable to drought, floods and diseases.

Question number: 132

» Ecology and Environment » Environmental Issues » Water Pollution and Its Control

MCQ▾

Question

Water pollution can be stopped best by

Choices

Choice (4) Response

a.

Spraying with DDT

b.

Treating effluents to remove injurious chemicals

c.

Rearing more fishes

d.

Cultivating useful water plants

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