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Question
Define the following term:
Tropism
Solution
Tropism is the biological phenomenon by which plants develop or move in response to environmental stimuli, including factors such as light, gravity, and touch.
RELATED QUESTIONS
To which directional stimuli do roots respond?
Name the plant organ which is positively phototropic.
What is meant by positive tropism and negative tropism? Explain with examples.
The plant part which exhibits negative geotropism is :
(a) root
(b) stem
(c) branch
(d) leaves
The growth movement of a plant part in response to the touch of an object is called :
(a) thigmonasty
(b) hydrotropism
(c) thigmotropism
(d) geotropism
The climbing organs of plants like tendrils grow towards any support which they happen to touch and wind around the support. This is an example of :
(a) chemotropism
(b) nastic movement
(c) thigmotropism
(d) geotropism
Differentiate between:
Thigmotropism and geotropism
Roots of plants are:
Assertion: Plants do have a nervous system for control and coordination.
Reason: Plants use electrochemical means to convey information from cell to cell.
The leaves of the 'chhui-mui' plant begin to fold up and droop in response to a stimulus. Name the stimulus and write the cause for such a rapid movement. Is there any growth involved in the movement?
