1. iGCSE revision powerpoint 2
There are 66 questions

2. Photosynthesis

3. Photosynthesis 2
8 –the word equation for photosynthesis. 9 – (H) the symbol equation for photosynthesis 10 – which leaf cells have the most chloroplasts? which 3 factors can limit photosynthesis? 14 what do we use to test for starch? 15 what colour does it go?

4. Mineral ions
16 – Which ion is missing from the smaller plant? 17– What is this ion used for? 18 – which ion is needed to make chlorophyll?

5. Photosynthesis experiments
19 – what gas would be collected here?
20 – how would
you test for it?
21 – what is the
independent variable?
22 – what is the
dependent variable?
– name two control variables
(keep the same)

6. Plant gas exchange
During the daytime, a plant carries out , taking in and giving out However, plants also carry out , taking in and giving out Gases move in and out through holes called by the process of

7. Transport in plants
33 – what is this? 34 – by what process does it absorb water from the soil? 35 – what is transpiration? 36 – 39 (H) name four conditions which affect the rate of transpiration 40 – name the tissue which transports water through the plant

8. Transport in plants 2
The tissue called transports and from the to other parts of the plant. 45 – what is this piece of equipment called? 46 – what measurements would you take with it?

9. Ecology 1
47 – what is this piece of equipment called? 48 – what would you use it for?

10. Food chains 49 – what does the orange blob represent?
50 – what is the producer?
51 – what is the primary consumer?
52 – what is the secondary consumer?
53 – what is the tertiary consumer?

11. Pyramids
54 – what is this? 55 – draw a pyramid of biomass for this food chain. 56 – (H) draw a pyramid of energy for this food chain. 57 – how much (%) of energy is transferred from one trophic level to the next?

12. Energy loss
58-60 Give three ways in which energy is lost at each stage in a food chain Give two ways in which keeping cows in boxes makes them more efficient.

13. Carbon cycle
63 – cloud to tree. 64– tree to cloud. 65 – animal to ground. 66 – factory to cloud.

14. You have three minutes to study this diagram.
Then it will disappear.
Then you have to draw it!
Unless you are doing the Foundation paper.
In which case you can draw something less boring instead.