Growth Regulators

The plant hormone controlling fruit ripening is

Which of the following induces dormancy?

Which of the following hormone induces cell division?

Induction of cell division and delay in senescence is done by

In plant, auxin synthesis occurs in

Avena curvature test is a bioassay for examining the activity of<

Select the correct option regarding the phytohormone to which the given molecular structure belongs.

Cytokinins are derivatives of __________.

The growth hormone used in breaking dormancy and inducing flowering is ______.

Which hormone initiates chloroplast formation in presence of light?

Auxin was isolated by

ABA accelerates senescence.

All collective, progressive and deteriorative processes that lead to complete loss of function in plants is called 

A ripened mango, kept with unripe mangoes cause their ripening. This is due to the release of a gaseous plant hormone

Match the plant hormones in Column I with their primary function in Column II.

Choose the correct combination:

The plant hormone that is used to store potato tubers is

Functions not induced by Cytokinins.
i. Production of leaves
ii. Production of chloroplasts
iii. Nutrient mobilisation
iv. Leaf senescence
v. Xylem differentiation
vi. Synthesis of Carotenoids

Ethylene is a simple gaseous plant growth regulator. Identify in which of the following, ethylene is synthesized in large amounts by tissues?

I. Senescence.

II. Ripening of fruits.

III. Actively growing apices of stems and roots.

IV. Cell division promoting activity.

The correct answer is

Arrange the auxins, gibberellins, cytokinins and ethylene in a correct sequence depending on their physiological activities given below.
A) Production of new leaves and chloroplast
B) Xylem differentiation
C) Internodal elongation in rice plant
D) Delay in senescence

Identify "bolting" promoting phytohormone in cabbage plants.