Natural Resources Test

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Natural Resources Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is/are the smallest global reservoir(s) of water?

A
Rivers

B
Atmosphere

C
Oceans

D
Freshwater lakes

E
Soil mosture

Solution

This is the correct option as the atmosphere forms the smallest global reservoir of water.
Question 2
1 / -0

Identify the group of molecules, essential to life, which contains nitrogen.

A
Carbohydrates, lipids and proteins

B
Carbohydrates, lipids and nucleotides

C
Carbohydrates, lipids and vitamins

D
Proteins, nucleic acids and some vitamins

E
Lipids, glucose and vitamins

Solution

Proteins and nucleic acids contain nitrogen. Some vitamins like vitamin B complex (B1, B3, B12) contain nitrogen as a structural component.

Question 3

1 / -0

Match the following:

Column - A	Column - B
A. Conversion of nitrate into nitrogen	1. Nitrification
B. Conversion of ammonia into nitrites and then into nitrates	2. Ammonification
C. Conversion of atmospheric nitrogen into ammonia	3. Denitrification
D. Conversion of organic nitrogen within the remains of plants or animals back into ammonium by bacteria or fungi	4. Nitrogen fixation

A - 1, B - 2, C - 3, D - 4

A - 4, B - 1, C - 3, D - 2

A - 3, B - 2, C - 4, D - 1

A - 3, B - 1, C - 4, D - 2

A - 2, B - 3, C - 4, D - 1

Solution

Conversion of nitrate into nitrogen is denitrification; conversion of ammonia into nitrites and then into nitrates is nitrification; conversion of atmospheric nitrogen into ammonia is nitrogen fixation; and conversion of organic nitrogen within the remains of plants or animals back into ammonium by bacteria or fungi is ammonification.

Question 4
1 / -0

Which of the following represents the correct sequence of nitrogen fixation in plants?

A
Dead plants and animals Ammonia Nitrites Nitrates Plants

B
Dead plants and animals Ammonia Nitrates Nitrites Plants

C
Dead plants and animals Nitrites Ammonia Nitrates Plants

D
Dead plants and animals Nitrates Nitrites Ammonia Plants

Solution

Dead plants and animals Ammonia Nitrites Nitrates Plants
Question 5
1 / -0

Identify the components marked A, B and C in the given diagram of oxygen cycle.

A
A is an inorganic molecule, B is photosynthesis and C is respiration.

B
A is an inorganic molecule, B is respiration and C is photosynthesis.

C
A is an organic molecule, B is respiration and C is photosynthesis.

D
A is an organic molecule, B is photosynthesis and C is respiration.

E
A is photosynthesis, B is an organic molecule and C is respiration.

Solution

In the diagram, A is an organic molecule, B is photosynthesis and C is respiration. An organic molecule (A) releases carbon dioxide on respiration (C), which will be used in the process of photosynthesis (B).
Question 6
1 / -0

As the air rises, it expands and cools. This cooling causes

A
evaporation of water

B
condensation of water vapours

C
heating of atmosphere

D
disruption in the water cycle

Solution

When water bodies are heated during the day, a large amount of water evaporates and goes into the air. Some amount of water vapours also gets into the atmosphere because of various biological activities. The air close to the surface of the earth gets heated and hot air rises up, carrying water vapour with it. As the air rises, it expands and cools. This cooling causes the water vapour in the air to condense in the form of tiny droplets to form clouds.
Question 7
1 / -0

Which of the following gases absorbs the harmful radiation of the sun?

A
O₂

B
CO₂

C
N₂

D
O₃

Solution

Ozone (O₃) is a poisonous gas that absorbs the harmful radiation of the sun. This prevents the harmful radiation from reaching the surface of the Earth where it may damage many forms of life.
Question 8
1 / -0

Which of the following is/are the harmful effect(s) of ozone depletion on human beings, animals, plants and environment?

A
Skin cancer

B
Damage to the eyes

C
Increased embryonic mortality in animals and humans

D
All of the above

Solution

Depleting ozone layer allows more UV radiation to pass through it, which reaches the Earth's surface. This radiation causes skin cancer and damage to the eyes. Increased embryonic mortality in animals and humans is also caused due to the UV radiation, which reaches the Earth's surface.
Question 9
1 / -0

Which of the following has a gaseous biogeochemical cycle system?

A
Phosphorus

B
Sulphur

C
Potassium

D
Hydrogen

E
Calcium

Solution

Hydrogen has a gaseous biogeochemical cycle. It is a cycle in which the reservoir is either in the atmosphere or the hydrosphere. This is a quick and relatively perfect system as its elements remain in more or less uniform circulation.
Question 10
1 / -0

Which of the following cycles is not included in the four biogeochemical cycles?

A
Water cycle

B
Nitrogen cycle

C
Rock cycle

D
Carbon cycle

E
Oxygen cycle

Solution

Rock cycle is a basic concept in geology that describes the dynamic transitions through geologic time among the three main rock types: Sedimentary, igneous and metamorphic. Rock cycle is not included in the four biogeochemical cycles. Thus, this is the correct option.