Our Environment Test

Result

Our Environment Test - 25

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Weekly Quiz Competition

Question 1
1 / -0

Non-biodegradable wastes are __________ in nature.

A
Decomposable

B
Non-decomposable

C
Both

D
None

Solution

Non biodegradable wastes are non-decomposable in nature. They are not degraded by microbes. They pile up and accumulate in nature.
Question 2
1 / -0

Depletion of ozone layer is noticed on

A
America

B
Asia

C
Australia

D
All over the earth

Solution

Depletion of ozone layer is noticed all over the earth.
Ozone is destroyed by collisions with other atoms and molecules.
Question 3
1 / -0

Living things interact with ________ constantly.

A
Other organisms

B
Environment

C
Non-living things

D
All of the above

Solution

The living things interact with other organisms, while they have constant interaction with their surrounding, that is the environment as well as the non-living aspect of it.
Thus, the correct option is D.
Question 4
1 / -0

Which of the following is the correct order of flow of energy?

A
Plants--> tigers--> microbes--> goats

B
Plants--> goats--> tigers--> microbes

C
Tiger--> plants--> microbes--> goats

D
Microbes--> tigers--> goats--> plants

Solution

The flow of energy is always unidirectional. The energy passes from primary producers to primary consumers. From the primary consumers, the energy is passed to secondary consumers and then to tertiary consumers. Thus the energy pyramid is always upright.
Question 5
1 / -0

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

A
True

B
False

C
Ambiguous

D
Data insufficient

Solution

Living organisms constantly take in or give out various abiotic factors. Thus, each biotic factor affects the quality of the abiotic factor around itself and thus affects the lives of the other biotic factors with which it shares the ecosystem. So, the given statement is false.
Hence, option 'B' is correct.
Question 6
1 / -0

Which of the following trophic levels includes a bird feeding on both insects and berries?

A
Primary consumer

B
Secondary consumer

C
Tertiary consumer

D
Both A and B

E
Both A and C

Solution

Primary consumers are the organisms that feed on producers. Since the bird is feeding on berries (producer), it is a primary consumer. The organisms that feed on primary consumers are known as secondary consumers. Since the bird is feeding on insects (primary consumer), it is a secondary consumer as well.
Thus, the correct answer is option D.
Question 7
1 / -0

Ecosystem has

A
Only plants and animals

B
Only air and $$H_2O$$

C
Only soil and light

D
Biotic and abiotic components
Solution
- In all the ecosystems there is an interaction between the living organisms and their physical environment.
- Here, all the living organisms are the biotic components, whereas the physical environment forms the abiotic components.
So, the correct answer is 'Biotic and abiotic component'
Question 8
1 / -0

Which one of the following cannot be considered as a decomposer?

A
Fungi

B
Bacteria

C
Hyenas

D
Earthworms

E
All of the above

Solution

Decomposers are organisms that break down dead or decaying organisms, and in doing so, they carry out the natural process of decomposition. Like herbivores and predators, decomposers are heterotrophic, meaning that they use organic substrates to get their energy, carbon, and nutrients for growth and development.
Hyenas are consumers. They are carnivorous animals. Others can be considered decomposers.
Thus, the correct answer is option C.
Question 9
1 / -0

Find the odd one out:

A
Plants

B
Microorganisms

C
Birds

D
Proteins
Solution
Correct Option: D
Explanation:
- The ecosystem is defined as the Interaction between biotic and abiotic factors.
- Biotic factors are the living components of the ecosystem such as plants, animals and microorganisms.
- Abiotic factors are the non-living components of the environment. Protein is a component of living organisms but it is an abiotic factor. Thus it is the odd one.
Question 10
1 / -0

Find the odd one out:

A
Thermocols

B
Plastic bags

C
Resins

D
Ash
Solution
Correct Option: D
Explanation:
- Wastes can be distinguished as decomposable waste and non-decomposable waste.
- Products that can be easily broken down naturally by water, air, solar energy or microorganisms are termed decomposable wastes.
- Products that cannot be decomposed or dissolved by natural agents are termed non-decomposable waste.
- Ash is decomposable while thermocol, plastic bags, resins are non-decomposable.
Hence, ash is the odd one among all.

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Re-Attempt Weekly Quiz Competition

Our Environment Test - 25

Result

Our Environment Test - 25

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SHARING IS CARING

Question 1

Decomposable

Non-decomposable

Both

None

Solution

Question 2

America

Asia

Australia

All over the earth

Solution

Question 3

Other organisms

Environment

Non-living things

All of the above

Solution

Question 4

Plants--> tigers--> microbes--> goats

Plants--> goats--> tigers--> microbes

Tiger--> plants--> microbes--> goats

Microbes--> tigers--> goats--> plants

Solution

Question 5

True

False

Ambiguous

Data insufficient

Solution

Question 6

Primary consumer

Secondary consumer

Tertiary consumer

Both A and B

Both A and C

Solution

Question 7

Only plants and animals

Only air and $$H_2O$$

Only soil and light

Biotic and abiotic components

Solution

Question 8

Fungi

Bacteria

Hyenas

Earthworms

All of the above

Solution

Question 9

Plants

Microorganisms

Birds

Proteins

Solution

Question 10

Thermocols

Plastic bags

Resins

Ash

Solution

User

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