Importance of Biogeochemical Cycles

Q.

The word Environment is derived from the ____________ word environer.

Q.

22. Which among the following gases do not contribute to greenhouse effect?

1. methane

2. carbon dioxide

3. water vapour

4. nitrogen dioxide

Q.

Write the name of any two greenhouse gases.

Q. Which of these water bodies contain saline water?

1. Sea
2. Ocean
3. River
4. Glacier

Q.

Give a brief note on the surrounding environment.

Q.

The burning of fossil fuels is one of the major sources of atmospheric Oxygen$\left({\mathrm{O}}_2\right)$.

1. True
2. False

Q.

Oxygen taken in during respiration is used to break down ______, produced as a result of photosynthesis.

1. glucose

2. protein

3. fats

4. vitamin

Q. What is the importance of different biogeochemical cycles in the nature?

[2 Marks]
[APSCERT]
[Biogeochemical Cycles]

Q.

What can you infer from the given picture?

1. A , B: Biotic components; C, D: Abiotic components

2. A , B: Abiotic components; C, D: Biotic components

3. A , C: Abiotic components; B, D: Biotic components

4. A , D: Abiotic components; B, C: Biotic components

Q.

The_____ gas present in the air is used by green plants for making their food through photosynthesis.

Q.

Which of these is/are true regarding atmosphere?

1. It maintains the earth's temperature.

2. It contains all the gases which are essential for sustaining life on the earth.

3. It protects us from harmful UV rays.

4. It helps us hear sound.

Q. The life supporting zone of Earth is called _____.

1. lithosphere
2. hydrosphere
3. atmosphere
4. biosphere

Q.

How does biosphere control abiotic world?

Q.

1) name the products of combustion of fossil fuels like coal and petroleum.How do the affect our environment.

Q.

An area that receives plenty of water and sufficient sunlight will show the growth of tall evergreen trees. What can be inferred from the given statement?

1. The biotic and abiotic factors are independent of each other

2. The nature of biotic factors at a place is decided by the abiotic factors of that place

3. The vegetation of a place decides the amount of rainfall received by that place

4. The nature of abiotic factors at a place is decided by the biotic factors of that place

Q. Question 51
How do fossil fuels cause air pollution?

Q. Pollution is either accumulation or disruption of any element in any quantities at any point in the biogeochemical cycle.

1. True
2. False

Q.

Smog is the air pollutant which:

1. reduces visibility.
2. causes asthma.
3. can neither cause asthama nor reduce visibility.
4. causes asthma and reduces visibility.

Q. Which of the following constitute the abiotic components of the biosphere?

1. Air
2. Land
3. Animals
4. Water

Q. Abiotic components include
(a) air, water, and plants
(b) plants and animals
(c) air, water, and soil
(d) soil, plants, and water

Q. The biogeochemical substances are never lost in the biogeochemical cycle. They are only recycled.

1. True
2. False

Q. Air pollution can lead to which of the following?

1. Allergies
2. Smog
3. Contamination of water bodies
4. Contamination of soil

Q. Choose the set which contains only abiotic organisms.

1. Soil, water, birds
2. Humans, soil, grass
3. Humans, soil, birds
4. Rocks, water, air

Q. Which of the following cycles involve photosynthesis and cellular respiration?

1. Sulphur cycle
2. Carbon cycle
3. Nitrogen cycle
4. Phosphorus cycle

Q.

Which of the following contribute to the carbon cycle?

1. Photosynthesis

2. Burning of fossil fuel

3. Transpiration

4. Respiration

Q. Abiotic components consist of

1. Land
2. Air
3. Water
4. All of these