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The function of companion cells is:

  1. A
    Loading of sucrose into sieve elements by passive transport.
  2. B
    Loading of sucrose into sieve elements.
  3. C
    Providing energy to sieve elements for active transport.
  4. D
    Providing water to phloem.

Solution & Step-by-step Explanation

Companion cells are specialized parenchymatous cells associated with sieve tube elements. They help in loading sucrose into the sieve tubes, maintaining a pressure gradient.

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The function of companion cells is:
A
Loading of sucrose into sieve elements by passive transport.
B
Loading of sucrose into sieve elements.
C
Providing energy to sieve elements for active transport.
D
Providing water to phloem.

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