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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Subjects
Science CBSE
Class 8
Microorganisms - Friend and Foe
Textbook questions

21. Intext question XVI

Exercise condition:

3 m.

Take two pots and fill each pot half with soil. Mark them A and B. Put plant waste in pot A and things like polythene bags, empty glass bottles and broken plastic toys in pot B. Put the pots aside. Observe them after 3-4 weeks.

1. What is the observed outcome in pot A after 3-4 weeks?

The plant waste has decomposed.
The plant waste remains unchanged.
The plant waste has turned into plastic.
The plant waste has grown into new plants.

2. What is the observed outcome in pot B after 3-4 weeks?

The non-biodegradable items have grown into plants.
The non-biodegradable items remain unchanged.
The non-biodegradable items have turned into soil.
The non-biodegradable items have decomposed.

3. What does this experiment demonstrate?

The benefits of using plastic in gardening.
The difference between biodegradable and non-biodegradable materials.
The growth of plants in the presence of plastic waste.
The difference between biodegradable and non-biodegradable materials.

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