Q. 1 A4.3( 66 Votes )
Which kind of garbage is not converted into compost by the red worms?
The non-biodegradable substances are not converted into compost by the red worms. Example: Iron strips, plastic bags, plastics, aluminium foil, etc.
Explanation: Composting does not occur in non-biodegradable substances.
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Given below are steps in vermicomposting and each step has been given an alphabet. Rearrange the steps in the correct sequence and write the alphabets on the chart provided. One step is done for you.
F: Dig a pit in a suitable place in your garden.
C: Spread sand on the floor of the pit.
E: Add vegetable peels and fruits waste in the pit.
A: Sprinkle water to keep it moist.
D: Place red worms in the pit.
B: Cover with a gunny bag or grass.NCERT - Science Exemplar
Have you seen any other organism besides redworms, in your pit? If yes, try to find out their names. Draw pictures of these.NCERT Science
The steps required for conversion of kitchen garbage into manure are given below in a jumbled form. (i) Put garbage in a pit
(ii) Cover the bottom of the pit with sand
(iii) Cover the pit loosely with a gunny bag or grass
(iv) Add worms
Which of the following shows the correct sequence of the above steps?NCERT - Science Exemplar
The method of preparing compost with the help of earthworms is calledNCERT - Science Exemplar
Answer the following questions in one or two words or sentences:
(a) Why should we prefer to use paper bags rather than polythene bags?
(b) Who, out of the following should properly dispose of the garbage – father, mother, elder brother, younger sister?
(c) Which one out of beetles, roundworm and earthworm are used for vermicomposting and why?NCERT - Science Exemplar