Biology 3.26 Quiz

Have you had the chance to watch a tree grow over a span of several years? Did you notice that the tree grew thicker and taller? Deep in the roots of the tree and high in the growing shoots are meristem cells. Each year, the meristem cells help the tree continue to grow. When the seed of a tree first starts to grow, what would happen if the cells did not differentiate?

All of the cells would be identical.

Which statement is true about cell differentiation?

It causes cells to change and specialize.

Have you had the chance to watch a tree grow over a span of several years? Did you notice that the tree grew thicker and taller? Deep in the roots of the tree and high in the growing shoots are meristem cells. Each year, the meristem cells help the tree continue to grow. As a tree ages, it needs to keep making more xylem and phloem cells to carry water and food. Which statement explains how this occurs?

Meristem cells divide and some of the new cells differentiate into xylem and phloem.

Have you had the chance to watch a tree grow over a span of several years? Did you notice that the tree grew thicker and taller? Deep in the roots of the tree and high in the growing shoots are meristem cells. Each year, the meristem cells help the tree continue to grow. Which process is most critical for different types of tree cells to develop?

cell differentiation

Which order of events is correct?

zygote → stem cells → cell differentiation