Download Turgor Pressure Turgor is a force exerted outward on a plant cell

Turgor Pressure
Turgor is a force exerted outward on a plant cell wall by the water contained in the cell. This force gives the plant
rigidity, and may help to keep it erect. Turgor can result in the bursting of a cell.
Definition: Turgor Pressure: also called turgidity, is the main pressure of the cell contents against the cell wall in
plant cells. Turgid plant cells contain more water than flaccid cells and exert a greater pressure on its cell walls.
When the vacuole is full it cause the plant to be up right, when the vacuole is empty to cause the plant to wilt.
Draw an example:
When material such as
water, leaves the cell
the pressure on the
inside cell wall
decreases. This
means the turgor
pressure on the cell
wall is decreased.
When material such as
water leaves and enters
the cell at the same rate,
the pressure on the
inside cell wall stays the
same. This means the
turgor pressure on the
cell wall is not changed.
When material such as
water enters the cell, the
pressure on the inside cell
wall increases. This means
the turgor pressure on the
cell wall is increased.
Tropism
Tropism : a response of a plant to an environmental stimulus.
Phototropism: a tendency of plants to grow toward a source of light. Draw an example:
Thigmotropism : the response of plants to touch. Draw an example:
Gravitropism/geotropism: a tendency of a plant to grow in a direction in response to the force of gravity.
Negatively geotropic: means that the plant fights gravity and grow upward. Draw an example:
Positively geotropic: means that the plants don’t fight against gravity and grow downward. Draw an example