List five main groups of natural plant growth regulators. Write a note on discovery, physiological functions and agricultural/horticultural applications of any one of them.

List four plant hormones. Write one function of each.

What are growth regulators ? List any two applications of gibberellins.

List any Five hormones of Pituitary gland and write one function of each.

List out any three physiological role of Gibberellins in plant growth.

take some carbon compounds ( naphthalene , camphor , alcohol ) one by one on a spatula and burn them * observe the nature of the flame and note whether smoke is produced * place a metal plate above the flame . Is there a deposition on the plate in case of any of the compounds ?

Write the chemical name and formula of common salt. List two main sources of common salt in nature. Write any two uses of common salt. How is it connected to our struggle for freedom?

The function of hormones are given in Column - A and the names of the hormones are given in Column - B. Match them and write the answer along with its letters: {:("Column - A","Column - B"),("A] Prepares the body to deal with the situation","i] Growth hormone"),("B] Regulates metabolism for body growth","ii] Testosterone"),("C] Regulates blood sugar levels","iii] Adrenaline"),("D] Regulates the growth and development of the body","iv] Progesterone"),(,"v] Insulin"),(,"vi] Thyroxine"),(,"vii] Oestrogen"):}