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Question
Name the stimulus which causes the following movement in plant:
phototropism
Solution
light
RELATED QUESTIONS
What is the stimulus in chemotropism?
Why is the folding up of the leaves of a sensitive plant on touching with a finger not a tropism?
Which of the following are not tropisms?
(i) growing of pollen tube in response to a sugary substance
(ii) folding up of leaves of sensitive plant in response to touch
(iii) winding of tendril around a support in response to touch
(iv) opening up of the leaves of a daisy flower in response to light
(a) (i) and (ii) (b) (ii) and (iii) (c) (i) and (iv) (d) (ii) and (iv)
When the leaves of a sensitive plant are touched with a finger, they fold up and when light fades at dusk, the petals of a dandelion flower close.
State one way in which the above two processes are similar.
Answer the following question.
What is tropism?
The bending of root of a plant in response to water is called ______.
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.
______ flowers bloom as the temperature increases.
Give one example of geotropism.
