Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 27, Problem 14SQ

Tree rings occur because_____

  1. a. there are droughts during the time the rings form
  2. b. environmental conditions influence xylem cell size
  3. c. heartwood alternates with sapwood
  4. d. periderm replaces epidermis
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What is wood? a. Primary xylem that has accumulated inside a cylinder of vascular cambium O b. Vascular cambium cells C. Secondary xylem that has accumulated inside a cylinder of vascular cambium d. Primary xylem that has accumulated outside a cylinder of vascular cambium e. Secondary xylem that has accumulated outside a cylinder of vascular cambium
Looking at the anatomy of a tree trunk, the part that greatly contribute to the welfare of humans specially in construction is _. a. heartwood b. secondary xylem c. secondary phloem d. A and B
which of the following concernig roost is incorrect? a. monocot roots exhibit primary grwoth and secondary growth b. dicots roots are called taproots c. dicots are called perennials because they exhibit secondary growth d. monoct roots form fibrous roots e. secondary growth causes the xylem and phloem to increase in diameter.
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