Name a hormone which

a. is gaseous in nature

b. is responsible for phototropism

c. induces femaleness in flowers of cucumber

d. is used for killing weeds (dicots)

e. induces flowering in long day plants

What is the mechanism underlying the phenomenon by which the terminal/apical bud suppresses the growth of lateral buds? Suggest measures to overcome this phenomenon.

While eating watermelons, all of us wish it was seedless. As a plant physiologist can you suggest any method by which this can be achieved.

To get a carpet like grass lawns are mowed regularly. Is there any scientific explanation for this?

While experimentation, why do you think it is difficult to assign any affect seen to any single hormone?

The role of ethylene and abscisic acid is both positive and negative. Justify the statement.

Positive Roles of Ethylene :
Negative Role of Ethylene :
Positive Role of Abscisic acid:
Negative Role of Abscissic acid:

Auxins are growth hormones capable of promoting cell elongation. They have been used in horticulture to promote growth, flowering and rooting. Explain the meaning of the following terms related to auxins.

a. auxin precursors

b. anti-auxins

c. synthetic auxins

Name a hormone which

a. is gaseous in nature

b. is responsible for phototropism

c. induces femaleness in flowers of cucumber

d. is used for killing weeds (dicots)

e. induces flowering in long day plants

On germination a seed first produces shoot with leaves, flowers appear later,

a. Why do you think this happens?

b. How is this advantageous to the plant?

A gardener finds some broad-leaved dicot weeds growing in his lawns. What can be done to get rid of the weeds efficiently?

Define parthenocarpy. Name the plant hormone used to induce parthenocarpy.