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anyanavicka [17]
3 years ago
9

What is the source and sink for xylem and phloem?

Biology
1 answer:
Strike441 [17]3 years ago
8 0

Answer:

Sap moves through phloem via translocation, the transport of dissolved materials in a plant. Unlike the xylem, which can only carry water upward, phloem carries sap upward and downward, from sugar sources to sugar sinks: Sugar sources are plant organs such as leaves that produce sugars

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Answer: B

Explanation:

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The main advantage of urea is its very low toxicity. Animals can transport urea in the circulatory system and store it safely in high concentrations. Also much less water is loss when a given quantity of nitrogen is excreted in a concentrated solution of urea than would be in a dilute solution of ammonia.

4 0
2 years ago
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C

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3 years ago
The process of natural selection occurs randomly in nature. true or false
djverab [1.8K]
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3 0
3 years ago
What can be interpreted from the graph?
elixir [45]

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3 0
3 years ago
Read 2 more answers
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