Abiotic Components

Q. Which among the following are abiotic components?

1. Air
2. Water
3. Birds
4. Soil

Q. What is an ecosystem

Q.

​How is the 'flow of energy' different from the 'flow of nutrients' in an ecosystem? [3 MARKS]

Q.

Why wood peckers are called ecosystem engineers?

Q.

A successful forest conservation strategy should involve

1. protection of animals at the highest trophic level

2. protection of only consumers

3. protection of only herbivores

4. a comprehensive program to protect all the physical and biological components

Q. We do not clean ponds and lakes but an aquarium needs to be cleaned regularly.Explain.

Q.

The reproduction and other activities of living organisms are affected by the abiotic components of ecosystem.

1. True
2. False

Q. Differentiate between a natural and an artificial ecosystem.

Q. The scientists who study ecosystems are called:

1. Ecologists
2. Economists
3. Engineers
4. Doctors

Q.

What are the roles in environmental protection?

Q. Cropland ecosystem is a natural ecosystem.

1. True
2. False

Q.

Question 30
We do not clean ponds or lakes, but an aquarium needs to be cleaned. Why?

Q. ________ components of an ecosystem comprise the physical factors like temperature, rainfall, wind, soil and minerals.

Q. Select the mismatched pair in the following.
(a) Biomagnification- Accumulation of chemicals at the successive trophic levels of a food chain.
(b) Ecosystem- Biotic components of the environment.
(c) Aquarium- A man-made ecosystem.
(d) Parasites- Organisms which obtain food from other living organisms.

1. (a), (b) and (c)
2. (a) and (b)
3. Only (b)
4. Only (d)

Q. The abiotic component of the pond ecosystem is .

1. Light
2. Fish
3. Algae

Q.

Q. Assertion :Abiotic components of an ecosystem involve the cycling of material and the flow of energy. Reason: Abiotic components are essential to keep biotic factors alive.

1. Both assertion and reason are correct and the reason is the correct explanation for assertion.
2. Both assertion and reason are correct but the reason is not the correct explanation for assertion.
3. Assertion is correct but the reason is incorrect.
4. Assertion is incorrect but the reason is correct.

Q. What is meant by producers in an ecosystem ?

Q. Which is the best example of interaction of biotic and abiotic factors of ecosystem?

1. Water
2. Land
3. Forests
4. Sunlight

Q. Which of these are positive influences of human beings on the ecosystem?
A. Declaring areas as wildlife sanctuaries
B. Increasing biodegradable packing materials that can be recycled
C. Removing pollutants from toxic industrial smoke
D. Using the natural resources intensively

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

Q. All the interacting organisms in an area together with the non-living constituents of the environment form an __________.

Q. Which among the following are abiotic components?

1. Air
2. Water
3. Birds
4. Soil

Q.

The table shows the formulae of members of the alkane series.

What is the formula of propane?

1. C₂H₈

2. C₃H₇

3. C₃H₈

4. C₃H₉

Q. Gardens and crop fields are examples of .......... ecosystem.

Q. Living organisms do not have any effect on the abiotic components around them in an ecosystem.

1. True
2. False
3. Ambiguous
4. Data insufficient

Q. A geographical area where different organisms like plants, animals, microorganisms, etc. live together and interact with one another and with their surrounding environment constitutes a/an:

1. Ecosystem
2. Community
3. Both A and B
4. Biosphere

Q. Which of the following is an abiotic component of an ecosystem?

1. Plants
2. Humus
3. Bacteria
4. Fungi

Q. What is the basic unit of environmental study?

Q. Which among the following sets constitute an abiotic group?

1. Sunlight, plants, animals
2. Sunlight, temperature, water
3. Sunlight, plants, fungi
4. Plants, animals, bacteria

Q. (a) What is an ecosystem? List its two main components.
(b) We do not clean ponds or lakes, but an aquarium needs to be cleaned regularly. Explain.