Multiple choice

Companion cells are specialised parenchyma cells present only in

  1. pteridophytes

  2. gymnosperms

  3. bryophytes

  4. angiosperms

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Companion cells are specialized parenchyma cells found only in angiosperms. They are closely associated with sieve tube elements in phloem tissue and provide metabolic support, loading and unloading sugars into the sieve tubes.