Biology for IGCSE & O level - Transport In Plants (Section 1 - No. 46)
Which of the following best describes the function of companion cells?
Transporting water and minerals
Loading and unloading sugars into phloem sieve tubes
Providing support to the plant
Producing hormones
Explanation
Companion cells provide metabolic support and facilitate the loading and unloading of sugars into the phloem.
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