List any two types of IUDs that are available for human females and state their mode of action.

List the types of water available to the plants?

Give examples of two antibiotics and their mode of action .

What are the two kinds of hormones on the basis of their mode of action?

(a) Name and explain the mode of action of any two types of IUDs. (b) List the advantages of using "Saheli" as a contraceptive.

List two types of the transport system in human beings and write the functions of any one of these.

Which type of placenta is found in human female?

Which type of placenta is found in human female?