A Level Biology – Phloem
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Question 1 of 16
1. Question
Which plant tissue is the main transport vessel for assimilates?
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Question 2 of 16
2. Question
What is the main carbohydrate transported in phloem?
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Question 3 of 16
3. Question
True or false – materials can only flow upwards in phloem
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Question 4 of 16
4. Question
Phloem is composed of 2 types of cell. Which two types?
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Question 5 of 16
5. Question
What are the names of the small channels that directly connect the cytoplasm of neighboring plant cells to each other?
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Question 6 of 16
6. Question
What is the name of the movement of assimilates throughout plants?
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Question 7 of 16
7. Question
True or false – sieve tube elements have no cytoplasm to maximise flow rate
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Question 8 of 16
8. Question
What is the name given to where organic compounds are synthesised in a plant?
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Question 9 of 16
9. Question
What is the name given to where organic compounds are delivered to for use or storage in a plant?
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Question 10 of 16
10. Question
Which ion is moved out of the companion cells to allow loading of sucrose into phloem?
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Question 11 of 16
11. Question
By which method of transport does the ion required for companions cells to load sucrose into the phloem pass across the membrane?
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Question 12 of 16
12. Question
Which of these is NOT a piece of evidence for translocation?
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Question 13 of 16
13. Question
True or false – in phloem sap moves from an area of high hydrostatic pressure to an area of low hydrostatic pressure
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Question 14 of 16
14. Question
How is the water potential of the phloem sap affected by assimilates being loaded into it?
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Question 15 of 16
15. Question
Sucrose is a dissacharide composed of which monosaccharides?
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Question 16 of 16
16. Question
True or false – when the phloem is cut, sap will ooze out, this shows that there must be a pressure gradient present
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