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प्रश्न
A plant's response to gravity is called ______.
उत्तर
A plant's response to gravity is called geotropism.
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संबंधित प्रश्न
Give the scientific terms used to represent the Bending of a shoot towards light.
Give the scientific terms used to represent the Winding of tendril around a support.
A plant's response to light is called ______.
Plant roots grow ______ and in the direction of force of ______.
To which of the following directional stimulus roots of a plant do not respond?
The chemical substance P is made and secreted by the meristematic tissue at the tip of stem (or shoot) of a plant. The chemical substance P is responsible for a phenomenon Q in plants in which the stem bends towards a source of light. The same chemical substance P has an opposite effect on the root of a plant. It causes the root of a plant to bend away from the source of light in a process called R.
(a) What is the chemical substance P?
(b) State whether P prefers to remains in the sunlit side of a stem or in shade.
(c) What is the effect of substance P on the rate of growth of (i) a root, and (ii) a stem?
(d) What is the name of process (i) Q, and (ii) R?
(e) What is the general name of chemical substances like P? Name another substance which belongs to this class of chemical substances.
Chlorophyll differs from hemoglobin by the presence of its central molecule ______.
The height of a plant is regulated by ______.
Define the following term:
Heliotropism
Differentiate between:
Positive and negative tropism
