1. plasmodium is a which causes in humans.2. changes nitrogen of air into ammonia.3. a drug that kills level 24. why viruses lie in the borderline of living and non-living? 5. streptococcus, lactobacillus, vibrio choleraehow are these microorganisms a) similar and b) different? 6. find the odd one out and give a reason for your choice. a) amoeba, volvox, paramoecium, euglenab) i. mushrooms are eaten as food. ii. used in fermentation of alcoholiii. grows on leather footwear.7. why does milk take longer time to form curd in winter than in summer? 8. why should buildings be painted before rainy season? level 39. microorganisms are found in the intestine of certain animals. name the microorganisms. which component of food is digested by them? 10. we make pickles at home. do we use any natural preservative in it? which are the preservatives used? 11. why do aids patients have low immunity? 12. my mother forgot to keep the extra idli dough in the refrigerator after use on a summer day. at noon she found that the dough was overflowing and had become very sour. how did this happen?