ch 5 science class 9 mcq
12 Which of the following is caused by bacteria?
1. AIDS
2. typhoid
3. amoebiasis
4. scabies
Click here to check your answer
11 AIDS is caused by
1. TMV
2. Ebola
3. HIV
4. None
Click here to check your answer
10 Important microorganisms that help in increasing soil fertility by decomposing biomass are
1. bacteria
2. algae
3. micro-arthopoda
4. virus
Click here to check your answer
09 Scabies is caused by
1. bed bug
2. housefly
3. agaricus
4. scabies bug
Click here to check your answer