Define the term stimulus.
Stimulus:
(a) What is meant by 'tropisms' (or tropic movements )? Explain with an example.
(b) What are the different types of tropisms? Define each type of tropism. Write the name of the stimulus in each case.
(c) How does tropism differ from nasties (or nastic movements)?
In tropic movements, plant parts move
(a) away from the stimulus
(b) towards the stimulus
(c) either towards or away from the stimulus
(d) only towards water
Define stimulus and response.