4732175
Beschreibung
Mindmap von Jack Willepotte, aktualisiert more than 1 year ago
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Erstellt von Jack Willepotte
vor fast 9 Jahre
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Specialised cells
- palisade leaf cells -
adapted for
photosynthesis
- packed with chloroplasts for
photosynthesis at the top of
the cell so they're near to the
light
- tall shape for surface area &
exposed down the side for
absorbing CO2 from the air in
leaf
- thin so that lots of palisade
cells can be packed in at the
top of a leaf, where most of
the photosynthesis happens
- thin so that lots of palisade
cells can be packed in at the
top of a leaf, where most of
the photosynthesis happens
- tall shape for surface area &
exposed down the side for
absorbing CO2 from the air in
leaf
- packed with chloroplasts for
photosynthesis at the top of
the cell so they're near to the
light
- Guard cells -
adapted to open
and close pores
- kidney shape opens
+ closes
stomata(pores) in a
leaf
- if plant has lots
of water guard
cells fill with
water and go
plump and
turgid(swollen)
making the
stomata open so
gases exchange
for
photosynthesis
- if plant has little water guard
cells lose water, becoming
flaccid making stomata close
helping stop too much water
vapour escaping
- thin outer walls and
thickened inner walls
make opening and
closing work
- guard cells also sensitive to
light and close at night,
saving water without missing
out on photosynthesis
- guard cells also sensitive to
light and close at night,
saving water without missing
out on photosynthesis
- thin outer walls and
thickened inner walls
make opening and
closing work
- if plant has little water guard
cells lose water, becoming
flaccid making stomata close
helping stop too much water
vapour escaping
- if plant has lots
of water guard
cells fill with
water and go
plump and
turgid(swollen)
making the
stomata open so
gases exchange
for
photosynthesis
- kidney shape opens
+ closes
stomata(pores) in a
leaf
- Red blood cells-
adapted to carry
oxygen
- concave shape for big
surface area to absorb
oxygen also helping
them pass smoothly
through capillaries to
reach body cells
- Packed with
haemoglobin the
pigment which absorbs
oxygen
- no nucleus so that
there's more room for
haemoglobin
- no nucleus so that
there's more room for
haemoglobin
- Packed with
haemoglobin the
pigment which absorbs
oxygen
- concave shape for big
surface area to absorb
oxygen also helping
them pass smoothly
through capillaries to
reach body cells
- Sperm & egg cells
specialised for reproduction
- Main function of an egg cell is to carry
female DNA and nourish the developing
embryo in early stages, egg cell contains
huge food reserves to feed embryo
- when sperm fuses with egg, the eggs
membrane instantly changes structure to
stop any more sperm getting in so that
offspring has the right amount of DNA
- sperm cell function is to get male
DNA to egg its long tail and
streamline head help it swim to egg,
sperm contain allot of mitochondria
for energy
- enzymes carried in sperms head
digest through egg cell membrane
- enzymes carried in sperms head
digest through egg cell membrane
- sperm cell function is to get male
DNA to egg its long tail and
streamline head help it swim to egg,
sperm contain allot of mitochondria
for energy
- when sperm fuses with egg, the eggs
membrane instantly changes structure to
stop any more sperm getting in so that
offspring has the right amount of DNA
- Main function of an egg cell is to carry
female DNA and nourish the developing
embryo in early stages, egg cell contains
huge food reserves to feed embryo
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