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In the following groups of materials, wh...

In the following groups of materials, which group(s) contains only non-biodegradable items ?
(i) Wood, paper, leather , (ii) Polythene, detergent, PVC
Plastic, detergent, grass , (iv) Plastic, bakelite, DDT

A

(iii)

B

(iv)

C

(i) and (iii)

D

(ii) and (iv)

Text Solution

Verified by Experts

The correct Answer is:
D
Substance which are not broken down by the bacteria or saprophytes are called non - biodegrable substance. Under certain conditions , the non - biodegrable substance can persist for longer time and can also harm the various componemts of our ecoystem . Therefore, option (d) is correct .
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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

Unlimited exploitation of nature by man disturbed the delicate ecological balance between the living and non-living 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. Rehan is an active member of 'Eco club' of his 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. As part of this awareness programme, they are explaining the importance of using different dustbing for biodegradable and non-biodegradable wastes. Generally green duslbing are for biodegradable wastes and blue for non-biodegradable wastes. 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

In the following groups of materials, which group/groups contain only non-biodegradable materials ? (i) wood, paper, leather (ii) polythene, detergent, PVC (iii) plastic, detergent, grass (iv) plastic, bakelite, DDT

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 non-living 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. Which of these group(s) contains only non biodegradable items? (i) Wood, paper, leather (ii) Polythene, detergent, PVC (iii) Plastic, detergent, grass (iv) Plastic, bakelite, DDT

Which of the following groups contain only biodegradable items?

OSWAL PUBLICATION-OUR ENVIRONMENT-NCERT EXEMPLAR (MULTIPLE CHOICE QUESTIONS)
  1. In a food chain, the third trophic level is always occupied by

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  2. An ecosystem includes :

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  3. In the given food chain, suppose the amount of energy at fourth trophi...

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  4. Accumulation of non-biodegradable pesticides in the food chain in incr...

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  5. Depletion of ozone is mainly due to

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  6. Organisms which synthesise carbohydrates from inorganic compounds by u...

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  7. In an ecosystem, the 10% of energy available for transfer from one tro...

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  8. Organisms of a higher trophic level which feed on several types of org...

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  9. Flow of energy in an ecosystem is always

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  10. Excessive exposure of human to UV-rays results in (i) damage to imm...

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  11. In the following groups of materials, which group(s) contains only non...

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  12. Which of the following limits the number of trophic levels in a food c...

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  13. Which of the following statement is incorrect?

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  14. Which group of organisms are not constituents of a food chain ? (i) ...

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  15. The percentage of solar radiation absorbed by all the green plants for...

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  16. In the given figure, the various trophic levels are shown in a pyramid...

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  17. What will happen if deer is missing in the food chain given below ? ...

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  18. The decomposers in an ecosystem :

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  19. If a grasshopper is eaten by a frog, then the energy transfer will be ...

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  20. Disposable plastic plates should not be used because :

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