Control and Coordination in Plants
Control and Coordination in Plants: Overview
This Topic covers sub-topics such as Ethylene, Plant Hormones, Auxin, Photoperiodism, Gibberellin, Cytokinin, Abscisic Acid, Phototropism, Geotropism, Thigmotropism, Hydrotropism, Chemotropism, Growth Promoters, Tropic Movement and, Coordination in Plants
Important Questions on Control and Coordination in Plants
Day-neutral plants initiate flowering based on photoperiodism.
_____ is an example of day neutral plant.
Short-day plants require less exposure to light.
The plants that flower, when day length is more than a certain critical length are called short-day plants.
_____ is an example of long day plants.
_____ first studied photoperiodism.
Photoperiodism is the typical movement in plants under the influence of the availability of light to induce fruit formation.
The chemicals inhibit growth is known as growth promoters.
What is tropic movement.
The movement of sunflower is an example of nastic movement.
Define nastic movement.
Clinostat demonstrates
The top part A of the flask-shaped reproductive organ X in the flower of a plant secretes a sugary substance into its lower part B which goes towards the bottom part C of the flask-shaped organ. When a tiny grain D coming from the top part E of another reproductive organ Y in the flower falls on part A, it grows a long tube F through the organ X in response to the sugary substance and reaches the bottom part C of the flask-shaped organ to carry out fertilization.
What is the phenomenon of growing a long tube in response to a sugary substance in the process of fertilization in a flower known as?
The twining of weak stems of bean and grapevine around the support is an example of _____.
Which plant hormone is responsible for wilting of leaves?
Thigmotropism is the response due to stimulus of
The root grows towards the centre of gravity are said to be
Plant hormone responsible for phototropism is
Write the name of the hormone that is responsible for the promotion of cell division.
A potted plant is growing in a transparent glass jar. In this plant, X and Y are the two growing parts having a lot of meristematic tissue. It is observed that part X of this plant exhibits positive geotropism but negative phototropism. On the other hand, part Y of this plant exhibits negative geotropism but positive phototropism. Name the part Y of the plant.
