Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 33, Problem 8TYK
Summary Introduction
Introduction:
Root is the part of the plant that is located beneath the soil surface. There are some cases where the roots grow above the ground and are called the aerial roots. The root is the non-leafy and non-nodal part of the plant.
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The root cap needs to be continually supplied with new cells by the root apical meristem (RAM) because:
Select one:
a. the root cap needs to recruit new cells from the RAM to develop lateral root hairs.
b. the population of root cap cells needs to be replenished from the RAM as older root cap cells differentiate into epidermal, cortex, and vascular tissues.
c. root cap cells are damaged or become separated as elongation in the tissue produced by the RAM forces it through the soil.
d. the root cap must add cells to cover the additional surface area created by the growing root tip.
truck driver is transporting a load of unripened bananas in an air-tight vehicle and decides to stop and eat an apple after checking on his cargo. He opens the back of his truck and, while walking around the unripened bananas, he decides the apple is overripe and drops it. When the bananas are finally delivered days later, he is surprised to find that all of his bananas have ripened. Why has this occurred?…
A region of active cell division where primary growth occurs is the
a. internode.b. apical meristem.c. root nodule.d. cork cambium.e. vascular cambium.
(a) Describe the role of mitosis in the growth of a plant.
(b) Explain why there are more cells observed in mitosis in the root tip
than in the woody stem.
Chapter 33 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 33.1 - Prob. 1SBCh. 33.1 - Prob. 2SBCh. 33.2 - Prob. 1SBCh. 33.2 - Prob. 2SBCh. 33.2 - Prob. 3SBCh. 33.3 - Prob. 1SBCh. 33.3 - Prob. 2SBCh. 33.3 - Prob. 3SBCh. 33.4 - Prob. 1SBCh. 33.4 - Prob. 2SB
Ch. 33.4 - Prob. 3SBCh. 33.4 - Prob. 4SBCh. 33.5 - Prob. 1SBCh. 33.5 - Prob. 2SBCh. 33 - Prob. 1TYKCh. 33 - Prob. 2TYKCh. 33 - Identify the correct pairing of a structure and...Ch. 33 - Prob. 4TYKCh. 33 - Prob. 5TYKCh. 33 - Prob. 6TYKCh. 33 - Prob. 7TYKCh. 33 - Prob. 8TYKCh. 33 - Prob. 9TYKCh. 33 - Prob. 10TYKCh. 33 - Discuss Concepts Baobab trees (Adansonia spp.)...Ch. 33 - Discuss Concepts While camping you notice a Do Not...Ch. 33 - Prob. 13TYKCh. 33 - Prob. 14TYKCh. 33 - 15. The sticky cinquefoil (Potentilla glandulosa)...Ch. 33 - Prob. 16TYKCh. 33 - Prob. 1ITDCh. 33 - Prob. 2ITDCh. 33 - Prob. 3ITDCh. 33 - Prob. 4ITD
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- Root hairs form in the zone of a. cell division. b. elongation. c. maturation. d. More than one of the choices are correct.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_forwardWhat region of a root has the most mitotic activity?arrow_forward
- Which one of the following statements about root hairs is CORRECT? Select one: a. They are found in the zone of cell elongation and help the root to fix nitrogen. b.They are found in the root cap and help the root sense gravity. c.They are found in the zone of cell division of the root and help anchor the plant in the soil. d.They are found in the root apical meristem and help the root to absorb water. e.They are found in the zone of cell differentiation in the root. Which of the following best describes the route to fruit formation in flowering plants? Select one: a. 1) pollination, 2) double fertilization, 3) embryo develops, 4) ovary matures, 5) ovule matures. b. 1) pollination, 2) germination of pollen, 3) endosperm develops, 4) ovule develops. c. 1) pollination, 2) endosperm develops, 3) embryo develops, 4) ovule matures. d. 1) pollination, 2) fertilization, 3) embryo develops, 4) ovary matures. e.1) pollination, 2) fertilization, 3) germination of pollen, 4) ovule…arrow_forwardWhich of the following is/are true? I. A measure of how much water is present in comparison with the solute molecules in the same volume of solution known as diffusion gradient II. The region found above the region of cell division can be seen in different young roots because of the presence of numerous root hairs that increase absorption. III. The meristematic region is has cells that elongate several times their original length and push the root tip through the soil. IV. The meristematic region is the growing apex of the rootarrow_forwardExplain the difference between symplast and transmembrane water transport pathways in plants. (i) (ii) Explain positive hydrostatic pressure in the root and conditions causing the root pressure. What is the phenomenon likely caused by this root pressure? (iii) Describe the phenomenon observed in Question 1 c) (ii) with inclusion of plant structures involved.arrow_forward
- Which of the following statements about age gradients within the plant body is FALSE? Select one: a. Age gradients within the plant body include an apical-basal gradient where the youngest cells are near the apices (tips of shoots and roots). b. Age gradients within the plant body reflect the plant cells’ lack of mobility due to their shared walls. c. Phloem is oldest toward the outermost cell layers of the tree trunk and xylem is oldest toward the innermost cell layers of a tree trunk. d. All of the statements are true. e. Age gradients within the plant cells include walls that are youngest immediately adjacent to the plasma membrane and progressively older toward the middle lamella.arrow_forwardPlant 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 PIN2 gene is rendered non-functional by mutation it dramatically reduces the speed of the gravitropic response in the root. Explain what PIN proteins do and why the loss on PIN2 would likely affect the speed of the gravitropic response.arrow_forward
- Plants grow through division of________ cells and differentiation of the resulting daughter cells. Thesedividing cells reside in two locations: at the tip of a shoot orroot, called the______ , and in cylinders along thesides of roots and stems, called________ . Which is responsible for primary growth?_______ Which is responsible for secondary growth?_________arrow_forwardChoose the incorrect statement: a. Bundle sheath cells surround the vascular bundles in both eudicots and monocots. b. Phloem sieve elements contain a higher concentration of amino acids than xylem vessels. c. Phloem sieve elements and xylem tracheary elements are similar at maturity because they are both dead. d. Root hairs are the primary cell type that absorbs water in roots.arrow_forwardWhich of the following pathways best summarizes the route of a mineral that isabsorbed by a plant? a. Root hairs → epidermis → cortex → endodermis → pericycle → xylem b. Root hairs → epidermis → endodermis → cortex → xylem c. Root hairs → pericycle → endodermis → cortex → xylem d. Root hairs → endodermis → cortex → pericycle → xylemarrow_forward
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