5. Complete Activity 2.5 (Page 22). 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.
Answer: The above activity can be carried out as follows:
Aim: To observe the wastes in both pot A and pot B after 3-4 weeks and make the necessary conclusions.
Materials Required: Two pots, soil, plant waste, polythene bags, empty glass bottles, broken plastic.
Procedure:
(i) Fill each of the two pots half with soil and mark them A and B.
(ii) Fill remaining half of pot A with plant waste and remaining half of pot B with things like polythene bags, empty glass bottles and broken plastic toys. Observe what happens to the pots after 3-4 weeks.
Observations:
After 3-4 weeks, the plant waste in pot A forms a dark substance and the plastic waste in pot B remains unchanged.
Conclusions:
We conclude that plant waste has been decomposed to form manure by the action of microbes. Microbes are not able to similarly decompose plastic waste. Hence, plastic waste remains in the environment and can be hazardous.
” 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.” – Solved.
Related Links:
Solution to Extended Learning Problem 1
Solution to Extended Learning Problem 2
Solution to Extended Learning Problem 3
Solution to Extended Learning Problem 4
Solution to Activity 2.1
Solution to Activity 2.2
Solution to Activity 2.3
Solution to Activity 2.4
