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 28.4, Problem 2TYK
Summary Introduction
Introduction:
The roots are mostly underground and help in anchoring the plant to the soil, absorb water and minerals and transport them upwards. It is also involved in storing products of photosynthesis. The roots are modified to absorb moisture and exchange gases.
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The reiterative unit of the vegetative shoot consists of:
A. Node, leaf and lateral root
B. Internode, node, leaf and axillary buds
C. Terminal bud, axillary bud, leaf and internode
D. Node, leaf, axillary bud, leaf scar
E. Internode, leaves, node, lateral root
At the tip of each root branch, there is a root cap that protects the root apical meristem beneath.
True
False
In the fibrous root system, the primary root is replace by adventitious roots developed from the shoot tissue.
True
False
Leaves can grow anywhere on a stem.
True
False
Fill in the blanks.
Stem and root thickening in eudicots is accomplished by ___ and is called ___ growth.
lateral meristems; primary
apical meristems; primary
apical meristems; lateral
lateral meristems; secondary
apical meristems; secondary
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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- Which of the following statements is false? a. Auxin and gibberellin promote stem elongation b. Cytokinin promotes cell division in shoot tips c. Abscisic acid promotes water loss and dormancy d. Ethylene promotes fruit ripening and abscission.arrow_forwardFigure 30.34 Which of the following statements is false? Negative water potential draws water into the root hairs. Cohesion and adhesion draw water up the xylem. Transpiration draws water from the leaf. Negative water potential draws water into the root hairs. Cohesion and adhesion draw water up the phloem. Transpiration draws water from the leaf. Water potential decreases from the roots to the top of the plant. Water enters the plants through root hairs and exits through stoma.arrow_forwardModified leaves that enable a stem to climb are called __________, whereas modified leaves that cover the winter buds of a dormant woody plant are called __________. (a) spines; bud scales (b) bud scales; tendrils (c) tendrils; bud scales (d) tendrils; spines (e) carnivorous leaves; spinesarrow_forward
- Which of the following is NOT a function of a stem? absorbs water and nutrients supports the plant’s weight transports water and sugars holds the plant uprightarrow_forwardThe cross-section of a woody root is shown in Figure 3. Observe and locate the center of the root and work to the outer portion. Identify and label the following: Secondary phloem Secondary xylem Primary xylem Vascular cambium Xylem rayarrow_forwardThe production of root hairs identifies which zone in the root -the zone of cell division -the zone of elongation -the root apical meristem -the zone of maturation -the root caparrow_forward
- Label A, B, C and D as the following: -Xylem -Cortex -Phloem -Pitharrow_forwardFrom the outside of a tree to its center, which of the following is the correct order of appearance? 1. periderm 2. vascular cambium 3. sapwood 4. secondary phloem 5. cork cambium 6. heartwood 1-4-5-2-6-3 1-3-2-5-4-6 1-2-4-5-3-6 1-5-4-2-3-6 1-2-4-5-6-3arrow_forwardThe following model is considered what root? Eudicot or Monocotarrow_forward
- Draw 1. ROOT TIP LONGITUDINAL CROSS SECTION – under medium power draw the whole tip. Label à Root cap, Zone of Cell Division, Zone of Elongation, Zone of Maturation, Apical Meristem. 2. ROOT CROSS SECTION – under medium power draw a pizza wedge to be able to view from the centre of the section out to the edge. Label à Epidermis, Endodermis, Cortex, Casparian Strip, Pericycle, and Vascular tissue 3. MONOCOT STEM CROSS SECTION – under high power focus the field of view on a vascular bundle and draw the vascular bundle and surrounding cells. Label à Xylem, Phloem, Vascular Bundle 4. 3 – YEAR OLD WOODY DICOT STEM CROSS SECTION – under low power draw a pizza wedge of the stem. Label à Primary xylem, Secondary xylem, Phloem, Cambium, Pith 5. LEAF CROSS SECTIONS –View and draw each of the cross sections under medium/high power. Label à Stomata, Vascular Bundle, Epidermis, Cuticle, Palisade Mesophyll, Spongy Mesophyll.arrow_forwardIn comparison with stems, roots secondary xylem exhibits..... 1. wider vessels 2. primary xylem outside of the secondary xylem 3. greater lignification 4. more derived parenchyma cells 5. less amount of parenchymaarrow_forwardList the three zones of a eudicot root tip.arrow_forward
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