1) Which one of these is a microorganism? a) Protozoa b) Mushroom c) Ant d) Earthworm 2) Which instrument helps us to see microorganisms? a) Stethoscope b) Telescope c) Periscope d) Microscope 3) Decomposers help to decompose/break down ____________. a) plastic waste b) organic matter c) technical waste d) humus 4) Humus/compost makes the soil fertile. a) True b) False 5) Which of these is not entirely organic waste? a) Dead remains of plants and animals b) Dry leaves c) Body waste of organisms d) Eggshells 6) What worms are required for Vermicomposting? a) Redworms b) Earthworms c) Ribbon worms d) Centipedes 7) What is the scientific name for Redworms? a) Eisenia foetida b) Lumbricina c) Lumbricus terrestris d) Eudrilus ugeniae 8) What are the suitable conditions to be created for redworms, to begin with vermicomposting? Choose 2 options. a) Moisture  b) A few drops of chemical fertilizer to begin with c) Appropriate room-like temperature d) Cold environment 9) What are Worm-casts? Choose the suitable answers. a) Another name for worm poop b) Worm vomit c) Liquid excreted by worms during reproduction d) Digested form of organic matter 10) How much time does it take for worms to convert the organic waste into enriched vermicompost? a) 10 days b) 3 to 4 weeks c) Depends upon the amount of organic material and red worms d) Cannot say 11) When do red worms become sexually mature? Basically, how is it identified? a) When the segments of their bodies elongate into bulbous structures b) When they start excreting worm casts c) As soon as the red worms take birth d) When the worms are 2 weeks old 12) Three-month-old wrigglers can produce two to three semi-translucent yellow worm cocoons a _________. a) day b) week c) month d) fortnight 13) It takes around 12 weeks for new babies to hatch. a) True b) False 14) Large-scale industries convert bulk organic waste and even manure into rich, black castings known as _________. a) Black compost b) Black worms c) Black gold d) Organic-compost 15) Vermicomposting is a useful method for remaking waste into an asset and making it more sustainable, all with the help of little worms. a) Very true! :) b) Ugh! No way.

Microorganisms and their role as decomposers

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