Okay, well for my exam board, the only official revision book has no diagrams or pictures in it. Typical WJEC. It was fine for Biology 1, but it's impossible for this unit because I can't just guess what bits of the lungs or the heart or the plant cells look like from the descriptions.
Anyway, I'm doing my homework now and stuck on what should be a simple question. Can someone just tell me which bit of the phloem is which, please.
THIS is the question.
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Can anyone help with this simple AS Biology? watch
- Thread Starter
- 12-03-2011 11:38
- 19-03-2011 13:58
not sure about part 1
D is cell wall
E is nucleus
A source is something that releases sucrose into the phloem eg. leaf
a sink removes sucrose from the phloem eg. roots
pholem has perforated end walls and hardly any cell contents which are both adaptions