Our Environment Test

Result

Our Environment Test - 24

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

A scorpion kills and then eats a spider.
Based on its behaviour, which terms describe the scorpion?

A
Producer, Herbivore, Decomposer

B
Producer, Carnivore, Heterotroph

C
Predator, Carnivore, Consumer

D
Predator, Autotroph, Herbivore

Solution

The scorpion kills and eats its food, so it is a predator (an animal that naturally preys on others). Also, it eats a spider, so it is a carnivore and a carnivore is a type of consumer. Therefore, the correct answer is option C.
Question 2
1 / -0

Hawks and owls living in the same area compete for the same type of mouse for food. Which situation would lead to the greatest problem in the food supply?

A
An increase in the owl population

B
An increase in the mouse population

C
A decrease in the hawk population

D
A decrease in the owl population

Solution

Since hawks and owls are competing for the same food resource, the main problem in the food supply will arise when the population of either bird (owl or hawk) will increase. The increase in the owl population will result in less food available for the hawks.
So, the correct answer is option A.
Question 3
1 / -0

A food web _________________________.

A
Increases the variety of food at each trophic level

B
Keeps a balance between organisms

C
Decreases the variety of food but increases the quantity of food at each trophic level

D
Increases the variety as well as the quantity of food at each trophic level

Solution

The network of food chains that are interconnected to each other is called the food web. In a food chain, each member is eaten by the other in the sequence. In a food chain, if one organism (primary consumer) gets extinct, then the other organism depending on the primary consumer, will die too. This is not the case with the food web. The food web consists of many interlinked food chains. So, if one organism is extinct, then the consumer of that organism has other options to feed upon.
Thus, the correct answer is option B.
Question 4
1 / -0

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

A
A, B

B
B, C

C
A, B, C

D
B, C, D

Solution

A) Declaring areas as wildlife sanctuaries help protect wild animals and preserve the ecosystem.
B) Increase in biodegradable packing materials that can be recycled solves the problem of disposal of tonnes of non-biodegradable waste, which is also harmful to the soil.
C) By removing the pollutants from toxic industrial smoke, the air quality can be maintained which will save us from harmful respiratory diseases.
D) If we use natural resources intensively, we will not be left with much in the coming years and there will be a huge crisis of unavailability of resources that we use everyday.
Thus, the correct option is C), as the statements A), B) and C) are positive influences of human beings on the ecosystem.
Question 5
1 / -0

The schematic diagram given here shows a food chain. Which one does not show the direction of energy flow?

A
1

B
2

C
3

D
4

Solution

Energy flow is always unidirectional meaning going in one direction in food chain.
The 4th arrow doesn't show the flow of energy as it shows arrow both forward and backward direction.
Rest all arrows 1,2,3 shows flow of energy from plants to herbivore to carnivores and to decomposers respectively.
So, the correct answer is option D.
Question 6
1 / -0

Two components of the ecosystem are:

A
Plants and animals

B
Trees and fungi

C
Living and non living

D
Frogs and man
Solution
The Ecosystem is comprised of two basic components: - Biotic and Abiotic components.
All the living things come under the biotic components. E.g. Producers, Consumers, and Decomposers.
The non-living things come under abiotic components. E.g. Sunlight, Air, Water, etc.
Thus, the correct answer is option C.
Question 7
1 / -0

Which of the following is true in an ecosystem ?

A
Animals can live without plants

B
Plants can live without animals

C
Animals can survive for long without plants

D
Plants can survive for long without animals

Solution

The ecosystem is a community like a system of checks and balances between physical elements and living beings. Removal of any one component, living or non-living will eventually lead to the destruction of the ecosystem. So, plants and animals cannot live without each other. However, if animals are removed plant would still survive longer as they can perform photosynthesis.
The correct answer is 'plants can survive for long without animals'
Question 8
1 / -0

Which of the following is non-biodegradable?

A
Tea leaves

B
Nylon

C
Remains of animals

D
Fleece of sheep

Solution

The correct answer is 'nylon'
Nylon is a synthetic polymer that is known for its resistance to biological degradation and is thus non-biodegradable. Tea leaves remain of animals and fleece of sheep are all natural things on which the enzymes of the microbes can be functional and thus can be degraded by them.
Question 9
1 / -0

Which of the following is an abiotic component?

A
Plants

B
Animals

C
Soil

D
Microorganisms

Solution

The ecosystem consists of two components-biotic and abiotic components. Biotic components are the living things while non-living things make up the abiotic components. Plants, animals and microbes being living are the biotic components whereas soil, being non-living, is abiotic.
Question 10
1 / -0

There are more herbivores than carnivores in the food chain because____

1. More herbivores are needed to support less number of carnivores
2. Much energy is lost in the transfer of energy from herbivores to carnivores
3. In this way, food chain stays in equilibrium

A
Option I is correct

B
Option II is correct

C
Option III is correct

D
All of these

Solution

Herbivores possess more energy than carnivores as the consume autotrophs directly.
Due to this reason energy transfer from herbivores to carnivores is just 10% of what herbivores have obtained from plants.
Moreover, if carnivores outnumbered and consumed all the herbivores, the carnivores will ultimately die of starvation.
Thus, to maintain equilibrium, herbivores are more in number than carnivores.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Our Environment Test - 24

Result

Our Environment Test - 24

Score

-

Rank

-

SHARING IS CARING

Question 1

Producer, Herbivore, Decomposer

Producer, Carnivore, Heterotroph

Predator, Carnivore, Consumer

Predator, Autotroph, Herbivore

Solution

Question 2

An increase in the owl population

An increase in the mouse population

A decrease in the hawk population

A decrease in the owl population

Solution

Question 3

Increases the variety of food at each trophic level

Keeps a balance between organisms

Decreases the variety of food but increases the quantity of food at each trophic level

Increases the variety as well as the quantity of food at each trophic level

Solution

Question 4

A, B

B, C

A, B, C

B, C, D

Solution

Question 5

1

2

3

4

Solution

Question 6

Plants and animals

Trees and fungi

Living and non living

Frogs and man

Solution

Question 7

Animals can live without plants

Plants can live without animals

Animals can survive for long without plants

Plants can survive for long without animals

Solution

Question 8

Tea leaves

Nylon

Remains of animals

Fleece of sheep

Solution

Question 9

Plants

Animals

Soil

Microorganisms

Solution

Question 10

Option I is correct

Option II is correct

Option III is correct

All of these

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.