Question

Define tropic movements. what are the different types of tropic movements?
Ans from 9th std textbook​

Answer 1

Answer:

A tropism (from Greek τρόπος, tropos, "a turning") is a biological phenomenon, indicating growth or turning movement of a biological organism, usually a plant, in response to an environmental stimulus. ... Tropisms are typically associated with plants (although not necessarily restricted to them).

Explanation:

types : 1--Phototropism (response to light). ...

3---Chemotropism (response to particular substances).

4---Hydrotropism (response to water).

5---Thigmotropism (response to mechanical stimulation).

6--Traumatotropism (response to wound lesion).

7---Galvanotropism or electrotropism (response to electric current)

Answer 2

Answer:

.

Explanation:

Phototropism - It is the movement of a plant in response to light, they will grow towards the direction of the light. It may be positive (if towards the light) or negative phototropic (if away from the light). Geotropism - The movement of the plant in response to the gravity, they will move in the direction of gravity.