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Biology revision B4 Nick wills


What affects the Rate of Photosynthesis?

the surface area the larger the
leaf the more energy it can
absorb from the sun
the thickness of the leaf a thick
leaf will have lots of cells for the
gases to travel through
A network of…

Page 2

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Biology revision B4 Nick wills

Tissue Process What is moved Structure

Xylem Transpiration Moves water and minerals from roots to Columns of hollow, dead
leaves reinforced cells

Phloem Translocation Moves food substances from leaves to Columns of living cells
rest of plant

The rate of Transpiratation can be increased by…

Page 3

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Biology revision B4 Nick wills

1st organism is the producer. The others are all consumers as they cannot produce their
own food
Each level in a food chain is called a trophic level.

Pesticides ­ chemicals that kill pests
Herbicides ­ chemicals which kill plants such as weeds

Page 4

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Biology revision B4 Nick wills

Saprophytic nutrition ­ the type of feeding done by the bacteria and fungi
Preserving food
Canning Canning involves cooking food, sealing it in sterile cans or jars, and boiling the containers to
kill or weaken any remaining bacteria as a form of sterilization.
Cooling Refrigeration…


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