113985
Beschreibung
Mindmap von eibhlinjones200, aktualisiert more than 1 year ago
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Erstellt von eibhlinjones200
vor mehr als 11 Jahre
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water flow through plants
- transpiration rate is increased by four main things
- light intensity
- The brighter the light, the
greater the transpiration rate.
Stomata begin to
close as it gets darker.
Photosynthesis can't happen in
the dark, so they dont need to be
open to let co2 in. When
stomata are closed, water can't
escape
- The brighter the light, the
greater the transpiration rate.
Stomata begin to
close as it gets darker.
Photosynthesis can't happen in
the dark, so they dont need to be
open to let co2 in. When
stomata are closed, water can't
escape
- temperature
- The warmer it is, the faster
transpiration happen. When it's
warm the water particles have
more energy to evaporate and
diffuse out of the stomata
- The warmer it is, the faster
transpiration happen. When it's
warm the water particles have
more energy to evaporate and
diffuse out of the stomata
- air movement
- If there's lots of air movement (wind) around a leaf,
transpiration happens faster. If the air around leaf is
very still, the water vapour just surrounds the leaf
and doesn't move away. This means there's a high
concentration of water particles outside the leaf as
well as inside it, so diffusion doesn't happen
quickly. If it's windy, the water vapour is swept away,
maintaining a low concentration of water in the air
outside the leaf. Diffusion then happens quickly,
from an area of high concentration to an area of low
concentration
- If there's lots of air movement (wind) around a leaf,
transpiration happens faster. If the air around leaf is
very still, the water vapour just surrounds the leaf
and doesn't move away. This means there's a high
concentration of water particles outside the leaf as
well as inside it, so diffusion doesn't happen
quickly. If it's windy, the water vapour is swept away,
maintaining a low concentration of water in the air
outside the leaf. Diffusion then happens quickly,
from an area of high concentration to an area of low
concentration
- air humidity
- If the air around the leaf is very dry, transpiration
happens more quickly. This is like what happens with
air movement. If the air is humid there's a lot of water in
it already, so there's not much of a difference between
the inside and the outside of the leaf. Diffusion happens
fastest if there's a really high concentration in one
place, and a really low concentration in the other
- If the air around the leaf is very dry, transpiration
happens more quickly. This is like what happens with
air movement. If the air is humid there's a lot of water in
it already, so there's not much of a difference between
the inside and the outside of the leaf. Diffusion happens
fastest if there's a really high concentration in one
place, and a really low concentration in the other
- light intensity
- Stomata open when the guard cells become turgid and closes when they become flaccid
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