Description
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Created by evie.daines
over 10 years ago
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Page 1
Large Surface Area to volume ratio
smal
smaller diffusion pathway
oxygen is able to reach the whole organism
Air moves in the trachea by pores on the surface called spiracles.oxygen diffuses in down the concentration gradient, and carbon dioxide diffuses out down the concentration gradient.the trachea branches off into tracheoles- they have a thin partially permeable wall ideal for diffusion.
THE USE A RHYTHMIC ABDOMINAL MOVEMENT TO MOVE AIR
the lamelli is on the surface of the gill filament- they help to increase the surface area for an optinum rate of reaction.
a
a counter current flow helps to maintain the concentration gradient. water flows one way, blood flows the other.
A dicot is a flowering plant.
the
the stomata open and close to allow efficient gas exchange. when it is dark stomata close as photosynthesis cant occur due to no sunlight.
meosphyll contains chloroplasts- this is when photosynthesis occurs as they absorb sunlight.
Single celled organism
Insects
fish
dictotyledonous plant
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