Describe6 marksChallenge
Describe the pathway of water from the soil to the xylem in a plant root, explaining the role of the Casparian strip at the endodermis.
CAIE A Level Biology 9700 · Transport in plants
Transport in plants: describe question
How this question is marked
6 marks, so the mark scheme is looking for about 6 separate creditworthy points. Making the same point twice in different words earns it once.
Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.
More Transport in plants questions
- 7 marks · A tall tree is actively transpiring on a warm day. Outline the process of water transport from the soil to the leaves, explaining how…
- 6 marks · Xylem vessel elements in herbaceous dicotyledonous plants are highly adapted for the transport of water and mineral ions. With reference…
- 6 marks · Outline the mechanism by which companion cells in plant leaves actively load sucrose into phloem sieve tubes, describing the roles of…
- 5 marks · In a herbaceous dicotyledonous plant, the arrangement of vascular tissues differs between the stem and the root. In a transverse section…
- 4 marks · Describe the distribution of xylem and phloem in transverse sections of a young (primary) herbaceous dicotyledonous plant stem and root…
- 5 marks · A student examines a transverse section of a stem from a herbaceous dicotyledonous plant. The xylem vessel elements are observed under a…
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.