Plant Growth an...

Consider the following statements and choose the option.

a. Kinetin was the first natural cytokinin that was obtained from unripe maize grains and coconut milk.
b. Gibberellins are synthesised in the apical shoot buds, root tips and developing seeds.

Climacteric fruits are fleshy fruits which show a sudden sharp rise of respiration rate at the time of ripening. Which of the following aids in ripening of climacteric fruits and dehiscence of dry fruits?

Application of minute quantity of which of the following to leaves reduces transpiration to a great extent through partial closure of stomata?

Short-long day plants require short photoperiods for floral initiation and long photoperiods for blossoming and usually come to flower between spring and summer. Which of the following is a short-long day plant?

Seed dormancy is the innate inhibition of germination of a viable seed even placed in most favourable environment for germination. Which of the following is/are methods for artificially breaking of seed dormancy?

How does pruning of plants promote branching?

Which of the following statements are correct/incorrect?

a. The origin of parts or organs and the gross form of the plant is called morphogenesis.
b. The annual plants show unlimited growth.
c. Growth regulators are organic substances synthesised in the plant parts.
d. The pattern of growth is sigmoid in plants or plant parts.

Gibberellic acid was first isolated from