Explain how sieve tubes manage to be living ?
Sieve tube elements do not have nuclei but have cytoplasm. They are dependent on adjacent companion cells which contains dense and very active cytoplasm and a large elongated nucleus.
I transport food in plants and am made of dead enucleated sieve tubes and living multinucleated companion cells. I am ____.
Which of the following is living but non-nucleated ? a) phloem cell b) sieve tube c) companion cell d) phloem parenchyma