How do sieve tube member (stm)cells differ from tracheids?

Question

Quizplus · Accepted Answer

Sieve tube members are specialized cells that form the phloem tissue in plants, responsible for transporting sugars and other organic molecules. They are alive but lack a nucleus and other organelles at maturity. In contrast, tracheids are specialized cells that are dead at maturity and responsible for water transport in plants. They have thick secondary cell walls but lack a companion cell. Therefore, the best choice is B, as it correctly compares and contrasts the unique features of both stm cells and tracheids.

How Do Sieve Tube Member (Stm)cells Differ from Tracheids