Question

explain at least two differentiate between photo tropic and Nastic Movement

Answer 1

hii
difference:
on the basis of: with their differences:
1.growth:
nastic: growth independent movement
tropic: growth dependent movement
2.time of action:
nastic:immediate
tropic:slow
3.reason for action:
nastic:change in turgor
tropic:cell division
4.response to stimulus:
nastic:non-directional
tropic:directional
5.alternate name:
nastic:nastics
tropic:tropism
6.examples:
nastic:opening and closing of stomata; leaves of  touch-me -not(mimosa)
tropic: phototropism,geotropism,chemotropism and hydrotropism etc.
hope this helps u!!

Answer 2

$\huge\bold{Answer}$

$\boxed{\textbf{Plant-movements}}$

Plant responses to various stimuli are seen in the form af movements. According to the nature of stimulus movements may be induced (paratonic) or spontaneous (autonomous).

$\bold{Induced-movements}$

These are of two types:

◇ Tropic movements.

◇ Nastic movements.

$\textbf{\underline{Tropic movements}}$

These are directional and growth dependent movements.

For example:

1. Phototropism - movement towards light.

2. Geotropism - movement towards gravity.

3. Hydrotropism - movement towards water.

4. Chemotropism - movement due to chemical stimules.

5. Thigmotropism - movement due to contact or touch stimulus.

$\textbf{\underline{Nastic movements}}$

These are non-directional and growth independent.

For example:

1. Seismonasty - movement in response to touch.

2. Photonasty - movement in response to light.

3. Thermonasty - movement in response to heat.

4. Nyctinasty - sleep movements.

5. Epinasty - movement due to growth (bending).

6. Chemonasty - movement in response to a chemical.