1. B4 a-d Pig (F)

2.  Name the pores in the bottom of a leaf

3.  Stomata

4.  What is the job of air spaces?

5.  Allow gases to diffuse from palisade cell to air/air to palisade cell

6.  List 3 adaptations of a leaf for efficient photosynthesis

7.  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

8.  What is osmosis

9.  Diffusion of water from a high water concentration to a low water concentration across a partially permeable membrane

10.  What is a partially permeable membrane?

11.  A membrane that only lets certain (small) molecules, like water, through

12.  What will happen to a red blood cell if you inject pure water into your veins?

13.  Water will enter the cell by osmosis until it bursts

14.  What do you call a plant cell that has lost a lot of water by osmosis

15.  Flaccid/plasmolysed

16.  Name tube Z

17. Phloem

18.  What is the job of phloem?

19.  Transporting sugars around the plant

20.  What is this device called and what is it for?

21.  Potometer  Measuring water uptake (allow transpiration) in a plant

22.  What is transpiration?

23.  Loss of water vapour from the leaves

24.  List 2 ways of increasing the rate of transpiration

25.  Increase temperature  Increase wind speed  Decrease humidity  Increase light intensity

26.  List 4 minerals needed by a plant

27.  Nitrate  Phosphate  Potassium  Magnesium

28.  Why does a plant need magnesium?

29.  To make chlorophyll (for photosynthesis)

30.  What will a plant look like if it is grown with very little nitrate?

31.  small

32.  How do minerals enter a root hair?

33.  Active transport