Question

Which one of the following is an example of antibiotic ?

(a) streptomycin (b) penicillin (c) tetracycline (d) All the above

(8) The rearing of silkmoth to obtain silk is called as

(a) pisciculture (b) sericulture (c) apiculture (d) All the above

Q.2. Draw a well labelled diagram of 2 marks

(a) Nitrogen cycle

Q.3. Write a short notes on 3x3= 9 marks

(a) Antibiotics (b) Benefits or uses of Microorganisms (c) ploughing

Q,4. Define (a) weeds (b) irrigation (c) fermentation (d) Multicellular organisms 1x4= 4 marks

Q.5. Write true or false 1x4= 4 marks

(a) Manure is an organic substance obtained from the decomposition of plant or animal wastes. (b)

Continuous cultivation of crops makes the soil rich in nutrients (c) The rainy season in India​

Answer 1

Answer:

Of which class u r

Explanation:

Answer 2

Answer:

i am trying to solve the other given questions

Explanation:

i am an human too so it may take much time to solve so i am able to solve 2 questions right know

1. Which one of the following is an example of antibiotic?

Ans: (b) penicillin

(8) The rearing pf silkmoth to obtain silk is called as

Ans: (b) sericulture

• i am trying to solve the remaining questions ...

thank you!!