BIOC14H3 Lecture 1: BIOC14 Lecture 1 annotated and Text noted.pdf
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14 Nov 2014
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Arrange the following events in an order that explains the mass flow of materials in the phloem.
1. Water diffuses into the sieve tubes.
2. Leaf cells produce sugar by photosynthesis.
3. Solutes are actively transported into sieve tubes.
4. Sugar moves down the stem.
A.) 2, 1, 4, 3 | ||
B.) | 1, 2, 3, 4 | |
C.) | 2, 3, 1, 4 | |
D.) | 4, 2, 1, 3 |