Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 33.3, Problem 1R
Summary Introduction
To review:
The mechanism by which an apical meristem can be maintained while leaf formation continues.
Introduction:
Meristem refers to localized regions composed of many undifferentiated cells, which are capable of giving rise to the various cells of the plant body. The apical meristem is present at the tips of roots and shoots and is responsible for primary growth.
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Which of the following statements are true of xylem? A) It is found in all land plants.B) It assists in conducting of materials, such as water and minerals, throughout the plant.C) It can provide structural support to the plant.D) It is found in the gametophyte generation, but not in the sporophyte.E) It contains specialized cells known as tracheids and vessel elements
What is the difference between primary growth in stems and primary growth in roots?
If the excised cotyledon were incubated for a longer period, would you expect more roots to form? Why?
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Life: The Science of Biology
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- In a cross-section of a tree, where are the oldest growth rings—in the outer region or nearer the pith? Where is the oldest secondary phloem—near the outside of the tree or near the cambium?arrow_forwardSketch side by side two daughter cells formed after mitosis of a meristematic cell in the vascular cambium of a eudicot stem. Label the cell formed toward the interior of the stem a meristematic cell. Should the daughter cellformed toward the outside be labeled primary xylem, primary phloem, secondary xylem, or secondary phloem?arrow_forwardArrange the following subset of cell depreciation during plant growth ( in length ) in the correct sequence . 1) cell division in primary meristem . 2) cell division in apical meristem . 3) differentiated cells . 4) growing cells in primary meristem.arrow_forward
- How Long Can Seeds Remain Viable in Dormancy?arrow_forwardWhy does a layer of periderm offer only temporary protection? When the plant makes a new layer of cork cambium, does it make the new layer to the outer side of the failing periderm or to the inner side of it, deeper in thesecondary phloem?arrow_forwardApical meristems are important for primary growth in plants .what is an apical meristem and where on a plant would you expecte to find them?arrow_forward
- What is the precursor of the intercalary meristem? How does the intercalary meristem contribute to the growth of the plant?arrow_forwardWhy root pressure is seen only under favorable conditions,like spring and rainy season?arrow_forwardName the two meristems that involved in the secondary growth that is responsible for the increase in girth of a plant.arrow_forward
- Plant roots develop differently from plant shoots during primary growth. Explain: How is the formation of lateral roots different from making new branches on shoots? Why don't roots and shoots generate new primary growth the same way?arrow_forwardIf the excised cotyledon with Indole-3-acetic acid (IAA) were incubated for a longer period, would you expect more roots to form? Why?arrow_forwardAside from conducting water and minerals, what is another important function of secondary xylem?arrow_forward
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