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
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 |
Related textbook solutions
Related questions
| Question 1: A slide of a terminal plant bud shows what physical characteristics demonstrating growth? | ||||||||||||||||||||||||||
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1. In order for blood to always flow unidirectionally through a closed circulatory system, the ________.
a. capillaries must have a thick endothelium
b. arteries must be elastic
c.pressure in all vessels must be equal
d.blood vessels farthest from the heart must have valves
2. Which one of the following does not correctly match the form with its function?
| a. roots: water and minerals in the soil are absorbed | ||||
| b. phloem sap: products of photosynthesis are transported from roots to shoots | ||||
| c. leaves: sugars are produced by photosynthesis | ||||
| d. xylem sap: water and minerals are transported from shoots to roots 3. If you place flaccid plant cells in pure water, water ________ into cell because it has ________.
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