7.2. Transpiration and translocation
A subsection of Biology, 5090, through 7. Transport in flowering plants
Listing 10 of 92 questions
shows a small, deep-rooted bush growing in a warm, dry climate. Branches B and C have a similar number of leaves, but the leaves of branch B are enclosed in a transparent polythene bag that empties into a container. 4 m leaves of branch B leaves of branch C container transparent bag is a graph showing the total volume of water lost by the leaves of each of the two branches during the same day. total volume of water lost time of day / h B C State two environmental factors responsible for the water loss during the day by branch C. For each factor, explain how it affects water loss. factor 1. explanation factor 2. explanation Explain how the volume of water lost from branch B is at first greater, then less than that lost from branch C. Suggest why, even for certain plants that are poisonous to humans, the container in can supply travellers with safe drinking water.
5090_s10_qp_21
THEORY
2010
Paper 2, Variant 1
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Questions Discovered
92