Phytohormones – The Plant Hormones
Phytohormones – The Plant Hormones: Overview
This topic defines phytohormones and explains the different types of hormones that are secreted by plants. Here, it describes the responsibilities of auxins, gibberellins, cytokinins, ethylene and abscisic acid in plant growth and development.
Important Questions on Phytohormones – The Plant Hormones
Mention the role of plant hormone: Abscisic acid.
Mention the role of plant hormone: Auxin.
Give one example of a plant growth promoter and plant growth inhibitor.
Which plant hormone is present in greater concentration in the areas of rapid cell division?
Name the hormone synthesized at the shoot tips. How does it help to respond to light?
Gibberellin helps in
Male flower formation is promoted by _____.
Which of the following is responsible for seed dormancy?
Ethylene gas
Which hormone acts as a growth promoter?
Abscisic acid causes _____.
The substance that triggers the fall of mature leaves and fruits from plants is due to
Which of the following is not associated with the growth of a plant?
The main function of abscisic acid in plants is to
_____ are chemical substances controlling and coordinating plant responses.
Name the plant hormone responsible for the elongation of cells.
State the main function of abscisic acid in plants.
