Question

(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 stimulus in each case.
(c) How do tropisms differ from nasties (or nastic movements)?

Answer 1

Answer:

hey user

a.tropism is the movement dependent on growth.... eg.response of plant towards light is phototropisn..

b. there are 5 types of tropisms.. they are:

phototropism~ response of plant toward light

hydrotropism~ response of plant towards water

chemotropism~response of plant towards chemicals..

thygmotropism~response of plant towards touch

geotropism~response of plant towards gravity.

c.tropic movements are dependent on growth whereas nastic movements are independent of growth... eg: mimosa plant(touch me not)..