3.27 Quiz: Cell Differentiation

Which statement is true about cell differentiation? A. It causes cells to change and specialize. B. It happens in all cells. C. It happens during cell division. D. It produces identical cells.

A. It causes cells to change and specialize.

Which order of events is correct? A. zygote→stem cells→cell differentiation B. mitosis→cell differentiation→stem cells C. stem cells→zygote→cell differentiation D. zygote→cell differentiation→mitosis

A. zygote→stem cells→cell differentiation

Read the passage to answer the question. 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? A. Cell division is not necessary for a plant to create new xylem and phloem cells. B. Meristem cells divide and some of the new cells differentiate into xylem and phloem. C. Xylem and phloem from one part of the plant are transferred to another part. D. The existing xylem and phloem divide to make more xylem and phloem.

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

Read the passage to answer the question. 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? A. The DNA would make new cells. B. The seed could form roots, but not leaves. C. Other cells would differentiate. D. All of the cells would be identical.

D. All of the cells would be identical.

Read the passage to answer the question. 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? A. sexual reproduction B. DNA replication C. mitosis D. cell differentiation

D. cell differentiation