Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 28, Problem 8TY
Summary Introduction
Introduction:
Tracheid is elongated cells found inside the xylem that helps in the transport of water and minerals across the plant tissues. Unlike vessel elements, tracheid does not contain perforation plates. The presence of tracheid differentiates vascular plants from non-vascular plants.
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List three structural differences between roots andshoots that allow roots to grow through the soil. Explainhow you would tell whether an isolated piece of a plantcame from the shoot or from the root.
28. this region of roots is composed of an apical meristema. region of maturationa. region of cell divisionb. region of elongationc. root cap29. what gives rise to an outer layer of cells in both roots and stems’=a. procambiumb. protodermc. pithd. ground meristem
Each unit of stem that consists of a leaf, axillary bud and internode is referred to as a phytomere. Note that axillary buds always occur above a leaf. Axillary buds give rise to branch shoots. Thus, branching in a shoot system is exogenous (of external origin). How does this compare to branching in a root system?
Chapter 28 Solutions
Principles of Biology
Ch. 28.1 - Refer back to Figure 25.4 to see the life cycle...Ch. 28.1 - Prob. 1TYKCh. 28.1 - Prob. 2TYKCh. 28.2 - Prob. 1CCCh. 28.2 - Prob. 2CCCh. 28.2 - Prob. 1TYKCh. 28.2 - Prob. 2TYKCh. 28.3 - Prob. 1CCCh. 28.3 - Prob. 2CCCh. 28.3 - Prob. 3CC
Ch. 28.3 - Prob. 1TYKCh. 28.3 - Prob. 2TYKCh. 28.4 - Prob. 1TYKCh. 28.4 - Prob. 2TYKCh. 28.4 - Prob. 1CCCh. 28 - Where would you look to find the gametophyte...Ch. 28 - Prob. 2TYCh. 28 - Prob. 3TYCh. 28 - Prob. 4TYCh. 28 - Prob. 5TYCh. 28 - Prob. 6TYCh. 28 - Prob. 7TYCh. 28 - Prob. 8TYCh. 28 - Prob. 1CCQCh. 28 - Prob. 2CCQCh. 28 - Prob. 3CCQCh. 28 - Prob. 1CBQCh. 28 - Prob. 2CBQ
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- 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_forwardAs plants grow, they tend to align theirstems and roots along the direction of the gravitational field. This tendency, which is related to differential concentrations of planthormones known as auxins, is referred to as gravitropism. As an illustration of gravitropism, experiments show that seedlings placed inpots on the rim of a rotating turntable do not grow in the verticaldirection. Do you expect their stems to tilt inward—toward the axisof rotation—or outward—away from the axis of rotation?arrow_forwardExamine the shoot system of a mature plant (Coleus blumei). Identify the shoot tip, nodes, internodes, leaves, and axillary buds. Each unit of stem that consists of a leaf, axillary bud and internode is referred to as a phytomere. Note that axillary buds always occur above a leaf. Axillary buds give rise to branch shoots. Thus, branching in a shoot system is exogenous (of external origin). How does this compare to branching in a root system?arrow_forward
- ________is the emergence of the embryo from a seed. Usually, the_______ (structure of the embryo) emerges first. In monocots, the shoot is protected by a sheath called the_______ . In dicots, a(n)______in the hypocotyl or epicotyl protects the apical meristem and developing leaves.arrow_forwardWhich of the following statements are true for root endodermis?I. Endodermal cells constitute the innermost layer of root cortex and surrond the vascular cylinder (xylem and phloem). II. Endodermal wall is covered with waxy layer of casparian strip which blocks apoplastic transfer of minerals.III. Due to presence of casparian strip, water and minerals can only eneter the vascular cylinder if they will be able to cross the plasma membrane of an endodermal cell.arrow_forwardThe transverse section of a plant material shows the following anatomicalfeatures - (a) the vascular bundles are conjoint, scattered and surrounded by a sclerenchymatous bundle sheaths. (b) phloem parenchyma is absent. Whatwill you identify it as?arrow_forward
- This question has to do with plant growth bu,t I do not understand how to anwser it properly. It is in the subject of Botany The question is ,"What is interdeterminate growth and how does it relate to the concepts of meristems and totipotency?"arrow_forwardAlthough potato tuber is an underground plant part, it is considered asa stem. Give two reasons.arrow_forwardIn a common eudicot pattern of development for the common bean in the figure, the radicle emerges from the seed (1), then begins to develop into a primary root that grows down into the soil. As this occurs, the hypocotyl emerges from the seed and bends into the shape of a hook (2). The bent hypocotyl lengthens and pulls the cotyledons upward (3). When the hypocotyl reaches the soil surface, exposure to light causes it to straighten (4). Primary leaves emerge from between the cotyledons and begin photosynthesis. The cotyledons typically undergo a period of photosynthesis before shriveling (5). Eventually, the cotyledons fall off the lengthening stem, and the young plant’s new leaves produce all of its food. a) Identify and explain what environmental factors influence the timing and coordination of the germination of seeds.arrow_forward
- Examine an image of longitudinal section the rough a Coleus stem tip. Can you find a node where procambium diverges in to the leaf primordium?arrow_forwardTwo mechanical tissues of the cortex in herbaceous stem. _____________________________________________________ Which of these mechanical tissues may be photosynthetic in function? _____________________________________________________ This is the basic type of stele in the stem of all angiosperms. ____________________________________________________arrow_forwardWhich of the following is not a function or characteristic of roots in plants? Question 8 options: Absorb minerals. Exhibit a negative gravitropism. Anchor the plant. Exhibit a positive gravitropism.arrow_forward
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