Briefly answer the following questions.
Name any two antibiotics of bacterial origin.

Name two antibiotics of fungal origin.

Briefly answer the following questions. State any two harms caused by fungi.

Answer the following questions : Mention two functions of the kidney.

Briefly answer the following questions. What are the main types of plant tissues?

Briefly answer the following questions. What are the organs of locomotion in an earthworm and starfish?

Name any two plasticizers.

Answer the following questions : Name two bases which do not decompose on heating.

Study the experimental set given below and answer the following questions : Name the chemical used to prevent bacterial growth.