I transport food in plants. I am __.
Phloem is made up of sieve tubes, companion cells and phloem parenchyma. It transports food bidirectionally.
I transport food in plants and am made of dead enucleated sieve tubes and living multinucleated companion cells. I am ____.
I am a chemical, I am found in plants and I act as a cement in the hardening of sclerenchyma. I am ________.