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Case Based Questions Test: Our Environment - 1 - Super TET MCQ


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10 Questions MCQ Test Science for Super TET - Case Based Questions Test: Our Environment - 1

Case Based Questions Test: Our Environment - 1 for Super TET 2024 is part of Science for Super TET preparation. The Case Based Questions Test: Our Environment - 1 questions and answers have been prepared according to the Super TET exam syllabus.The Case Based Questions Test: Our Environment - 1 MCQs are made for Super TET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Case Based Questions Test: Our Environment - 1 below.
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Case Based Questions Test: Our Environment - 1 - Question 1

Study the passage and answer the questions :

The activities of man had adverse effects on all forms of living organisms in the biosphere.

Unlimited exploitation of nature by man disturbed the delicate ecological balance between the living and nonliving components of the biosphere. The unfavourable conditions created by man himself threatened the survival not only of him but also of the entire living organisms on the mother earth. One of your classmates is an active member of ‘Eco club’ of your school which is creating environmental awareness amongst the school students, spreading the same in the society and also working hard for preventing environmental degradation of the surroundings.

Q. The green dustbin signifies:

Detailed Solution for Case Based Questions Test: Our Environment - 1 - Question 1

Green dustbins are for biodegradable wastes while blue dustbins are for non-biodegradable wastes.

Case Based Questions Test: Our Environment - 1 - Question 2

Study the passage and answer the questions :

The activities of man had adverse effects on all forms of living organisms in the biosphere.

Unlimited exploitation of nature by man disturbed the delicate ecological balance between the living and nonliving components of the biosphere. The unfavourable conditions created by man himself threatened the survival not only of him but also of the entire living organisms on the mother earth. One of your classmates is an active member of ‘Eco club’ of your school which is creating environmental awareness amongst the school students, spreading the same in the society and also working hard for preventing environmental degradation of the surroundings.

Q. Disposable plastic plates should not be used because

Detailed Solution for Case Based Questions Test: Our Environment - 1 - Question 2
Disposable plastic plates should not be used because they are made of non-biodegradable materials
Case Based Questions Test: Our Environment - 1 - Question 3

Study the passage and answer the questions :

The activities of man had adverse effects on all forms of living organisms in the biosphere.

Unlimited exploitation of nature by man disturbed the delicate ecological balance between the living and nonliving components of the biosphere. The unfavourable conditions created by man himself threatened the survival not only of him but also of the entire living organisms on the mother earth. One of your classmates is an active member of ‘Eco club’ of your school which is creating environmental awareness amongst the school students, spreading the same in the society and also working hard for preventing environmental degradation of the surroundings.

In the following groups of materials, which group(s) contains only non-biodegradable items?

(I) Wood, paper, leather

(II) Polythene, detergent, PVC

(III) Plastic, detergent, grass

(IV) Plastic, bakelite, DDT

Detailed Solution for Case Based Questions Test: Our Environment - 1 - Question 3
Substances which are not broken down by the bacteria or saprophytes are called nonbiodegradable substances. Under certain conditions, the non-biodegradable substances can persist for a longer time and can also harm the various components of our ecosystem.
Case Based Questions Test: Our Environment - 1 - Question 4

Read the given passage and answer the questions given below:

A farmer is growing a crop regularly in his field. He uses chemical fertilizers, pesticides, organic manure as well as bio-fertilizers. Very close to his field is a factory which emits smoke as a byproduct. There is also a huge lake in the nearby area.

Q. A considerable increase in plant life in the lake was noticed after the farming activity intensified. The most likely reason for this could be:

Detailed Solution for Case Based Questions Test: Our Environment - 1 - Question 4

A considerable increase in plant life in the lake was noticed after the farming activity intensified. The most likely reason for this could be chemical fertilizers leached into the lake from the field.

Case Based Questions Test: Our Environment - 1 - Question 5

Read the given passage and answer the questions given below:

A farmer is growing a crop regularly in his field. He uses chemical fertilizers, pesticides, organic manure as well as bio-fertilizers. Very close to his field is a factory which emits smoke as a byproduct. There is also a huge lake in the nearby area.

Q. An expert agriculturist suggests to the farmer to minimize the use of chemical fertilizers and instead use biofertilizers as they have many advantages over chemical fertilizers. Which of the following is NOT true for biofertilizers?

Detailed Solution for Case Based Questions Test: Our Environment - 1 - Question 5
Biofertilisers do not require large set-up for their production.
Case Based Questions Test: Our Environment - 1 - Question 6

Read the given passage and answer the questions given below:

A farmer is growing a crop regularly in his field. He uses chemical fertilizers, pesticides, organic manure as well as bio-fertilizers. Very close to his field is a factory which emits smoke as a byproduct. There is also a huge lake in the nearby area.

Q. Consider the following food chain in the same lake. Aquatic plant → Small fish → Big fish → Birds Which of the above organisms is likely to show minimum amount of pesticide concentration in them after considerable time?

Detailed Solution for Case Based Questions Test: Our Environment - 1 - Question 6
Aquatic plants beginning at the first trophic level will show a minimum amount of pesticide concentration in them after considerable time.
Case Based Questions Test: Our Environment - 1 - Question 7

Food chains and the energy flow within an ecosystem provide an important understanding of contingencies and mutual dependencies of organisms. The given flow chart depicts the energy flow within some members of a grassland ecosystem. The grass in the below ecosystem transducer 120,000 J of sunlight and fixes it into 12,000 J of energy. It is established that 90% of the energy of one trophic level is not passed to the next trophic level. Further assume that the energy transferred from one trophic level to the next is equally shared among the different organisms at that trophic level.

Based on the information given and your knowledge, answer the of the questions:

Q. How many food chains are present in the food web depicted above?

Detailed Solution for Case Based Questions Test: Our Environment - 1 - Question 7
There are five food chains depicted in the above flow chart.
Case Based Questions Test: Our Environment - 1 - Question 8

Food chains and the energy flow within an ecosystem provide an important understanding of contingencies and mutual dependencies of organisms. The given flow chart depicts the energy flow within some members of a grassland ecosystem. The grass in the below ecosystem transducer 120,000 J of sunlight and fixes it into 12,000 J of energy. It is established that 90% of the energy of one trophic level is not passed to the next trophic level. Further assume that the energy transferred from one trophic level to the next is equally shared among the different organisms at that trophic level.

Based on the information given and your knowledge, answer the of the questions:

Q. In the food web depicted above, identify the most energy efficient link for tertiary consumers.

Detailed Solution for Case Based Questions Test: Our Environment - 1 - Question 8
Tertiary consumer here is Eagle, so for eagle the most energy efficient link is rabbit, as the rabbit is not being eaten in any other food chain.
Case Based Questions Test: Our Environment - 1 - Question 9

Food chains and the energy flow within an ecosystem provide an important understanding of contingencies and mutual dependencies of organisms. The given flow chart depicts the energy flow within some members of a grassland ecosystem. The grass in the below ecosystem transducer 120,000 J of sunlight and fixes it into 12,000 J of energy. It is established that 90% of the energy of one trophic level is not passed to the next trophic level. Further assume that the energy transferred from one trophic level to the next is equally shared among the different organisms at that trophic level.

Based on the information given and your knowledge, answer the of the questions:

Q. Flow of energy in an ecosystem is always

Detailed Solution for Case Based Questions Test: Our Environment - 1 - Question 9
Flow of energy in an ecosystem is always unidirectional.
Case Based Questions Test: Our Environment - 1 - Question 10

Read the following passage given below and answer the questions:

A water body characterized by nutrient rich water supports abundant growth of phytoplanktons and other water plants on its surface. Over time, the water body gets filled with a large number of such plants and the process is called Eutrophication. In such water bodies, dissolved oxygen content is nil or very less.

Q. Eutrophicated water usually looks turbid green in colour because of

Detailed Solution for Case Based Questions Test: Our Environment - 1 - Question 10
Eutrophicated water usually looks turbid green in colour because of excessive growth of phytoplanktons
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