Question

Where are the companion cells located in flowering plants? What is their function?

Answer 1

• Companion cells are the part of phloem and are thinly walled .elongated, specialized parenchymatous cells that have a nucleus.
  

It's function is-

• These are associated with sieve tubes through sieve pores and maintain its pressure gradients.
• Helps in the conduction of food.
• Always found in angiosperms only.