tick the correct answers
Answers
Answer:
A. (ii)
B. (iii) Housefly
Question-1:
Which of the following is an antibiotic?
Answer:
ii) Streptomycin ✅
Antibiotics are the chemical substances which are produced from microorganisms like bacteria and fungi, are used as a medicine to kill or to stop the growth of the disease-causing microorganisms or pathogens.
They are used to treat many fungal and bacterial infections but are ineffective against the viral diseases.
Example:- Streptomycin, Penicillin, Tetracycline, etc.
Question-2:
The most common carrier of communicable disease is ___________
Answer:
iii) Housefly ✅
Houseflies breed on filth and refuse. Many pathogens from the wastes stick to the hairs of the housefly present in its legs. These pathogens, however don't affect the housefly. As the housefly sits on the uncovered food items or water, then the pathogens present in the leg hairs stick to the food and water. And when any person consumes this food, he gets ill and may catch a disease. Eating the spoilt and uncovered food may lead to food poisoning as well.