b4a-d-pig-f - Macmillan Academy
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Transcript b4a-d-pig-f - Macmillan Academy
B4 a-d Pig (F)
Name the pores in the bottom of a leaf
Stomata
What is the job
of air spaces?
Allow
gases to diffuse from palisade
cell to air/air to palisade cell
List 3 adaptations
of a leaf for
efficient
photosynthesis
Broad
(large surface area)
This (short diffusion distance)
Palisade cells have many chloroplasts
(containing chlorophyll)
Veins bring water/remove sugar
Stomata allow carbon dioxide
in/oxygen out
What is osmosis
Diffusion of water
from a high water
concentration to a
low water
concentration
across a partially
permeable
membrane
What
is a partially permeable
membrane?
A membrane that
only lets certain
(small) molecules,
like water, through
What will happen
to a red blood cell
if you inject pure
water into your
veins?
Water will enter the cell by osmosis until it
bursts
What do you call a plant cell that has lost
a lot of water by osmosis
Flaccid/plasmolysed
Name tube Z
Phloem
What is the job of phloem?
Transporting
sugars around the plant
What is this
device called
and what is it
for?
Potometer
Measuring
water uptake (allow
transpiration) in a plant
What is transpiration?
Loss
of water vapour from the leaves
List 2 ways of increasing the rate of
transpiration
Increase
temperature
Increase wind speed
Decrease humidity
Increase light intensity
List
4 minerals needed by a plant
Nitrate
Phosphate
Potassium
Magnesium
Why does a plant
need magnesium?
To
make chlorophyll (for
photosynthesis)
What will a plant
look like if it is
grown with very
little nitrate?
small
How do minerals
enter a root hair?
Active
transport