2. The movements of plant
which are
directional, either
towards the stimulus or
away from it, are called
Tropic Movements.
Tropic
Movements.
3. A tropism is a biological
phenomenon, indicating
growth or turning movement
of a biological
organism, usually a plant, in
response to an environmental
stimulus.
Tropism.
4. Types of Tropic
Movements.
*Phototropism
*Geotropism
*Chemotropism
*Hydrotropism
5. The bending of a plant
towards the light is called
as phototropism.
It is the growth and
response to a light
stimulus.
Phototropism.
6.
7. The downward movement
of a plant in response to
gravitational force is called
geotropism.
Geotropism is also known as
gravitropism.
Geotropism.
8.
9. The growth and movement
of plants navigated by a
chemical stimulus from
outside the plant.
An example of chemotropic
movement can be seen
during the growth of the
pollen tube.
Chemotropism.
10.
11. It can be also written that
conversion of a flower into
fruit is the example of
chemotropism.
12. Hydrotropism is a plant's
growth response in which
the direction of growth is
determined by a stimulus in
water concentration.
Hydrotropism.
13.
14. Quiz Time!
The movement or growth of plants in response to
gravity is known as _______________.
The movement or growth of plants in response to
lights or colours of light is known as _________.
The movement or growth of plants in response to
water is known as _____________.
The movement or growth of plants in response to
chemicals is known as ____________.
