Question

what are tropic movements or tropisms ? explain its types

Answer 1

Hello
----------

◇ Tropic movements ◇

The plant movements in response to external stimulus, in which the direction of stimulus determines the direction of plant movements are called tropic movements.

There are various types of tropic movements : -

i) Geotropism , stimulus - Gravity

ii) Hydrotropism , stimulus - water

iii) Thigmotropism , stimulus - Touch

iv) Phototropism, stimulus - Light

Tropic movements can again be positive or negative. For example, the plant shoot going upwards is negatively Geotropic , whereas, plant roots going downwards is positively Geotropic .

HOPE IT HELPS

Answer 2

tropism

when a plant shows some growth movement in response to stimulus then it's called as tropism


types

1)phototropism

plant ( stem ) grows in response to sunlight

2)geotropism

roots grow in response to gravity

3)chemotropism

plants grow in response to chemicals
(example : growth of pollen tube)


4)hydrotropism

plants grow in response to water


IF ANY DOUBT YOU MAY ASK


HOPE THIS HELPS YOU

THANK YOU