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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Textbook Question
Chapter 28, Problem 12SQ
Stomata open in response to light when _______
- a. ions flow into guard cell cytoplasm
- b. ions flow out of guard cell cytoplasm
- c. water evaporates out of guard cells
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Figure 2 shows the cross-section of a eudicot root.
i. Based on Figure 2, identify the structure that regulates the movement of water and minerals towards the xylem in the root.
ii. Name structure of the cell membrane allows it to act as a selective barrier?
iii. Predict what will happen to the transportation of water and minerals through the plasma membrane if the root was poisoned and no cellular respiration occurred
What structural features of guard cells foster their ability to form anopen pore in plant epidermal surfaces?a. thickened inner cell walls and radially oriented microfibrilsb. thickened outer cell walls and radially oriented microfibrilsc. thickened inner cell walls and longitudinal microfibrilsd. thickened outer cell walls and longitudinal microfibrilse. uniform thickness of cell walls and randomly arrangedmicrofibrils
Closed stomata______ . a. limit gas exchange c. prevent photosynthesis b. permit water loss d. absorb light
Chapter 28 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 28 - Carbon, hydrogen, and oxygen are _______ for...Ch. 28 - Decomposing organic matter in soil is called...Ch. 28 - A vascular cylinder consists of _______ a....Ch. 28 - Prob. 4SQCh. 28 - The nutrition of some plants is enhanced by a...Ch. 28 - Water evaporation from plant parts is called...Ch. 28 - Prob. 7SQCh. 28 - Prob. 8SQCh. 28 - Sieve tubes are part of ______. a. cortex b....Ch. 28 - With stomata closed, a waterproof cuticle ______...
Ch. 28 - TCE Uptake by Transgenic Plants Plants used for...Ch. 28 - TCE Uptake by Transgenic Plants Plants used for...Ch. 28 - TCE Uptake by Transgenic Plants Plants used for...Ch. 28 - TCE Uptake by Transgenic Plants Plants used for...Ch. 28 - When guard cells swell, ______ a. transpiration...Ch. 28 - Stomata open in response to light when _______ a....Ch. 28 - Prob. 13SQCh. 28 - Prob. 14SQCh. 28 - Prob. 15SQCh. 28 - Nitrogen deficiency stunts plant growth and causes...Ch. 28 - You just returned home from a three-day vacation....Ch. 28 - Prob. 3CTCh. 28 - Prob. 4CTCh. 28 - Prob. 5CT
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- If a plant’s stomata are made to stay open at all times, orclosed at all times, it will die. Why?arrow_forward(b) Water absorbed by plant roots travels by different pathways from the root hairs to the xylem. Figure 5 shows these pathways in a plant root. cell A xylem vessel root hair key pathway B Tissue D Tissue E * pathway C Figure 5: Schematic representation of water movement through the tissues of a plant root (PLEASE TURN OVER) Page 6 CONT'D from Page 5 i. Explain how water moves from the root hair to the xylem vessels in the root. ii. Identify cellA, pathway B, pathway C, tissue D and tissue E in Figure 5.arrow_forwardWhich of the following describes what happens in the ROOT HAIR cells? Mineral lons Water pass into the passes into Plant loses plant the plant water by through through transpiration active osmosis transport A Yes Yes No В Yes Yes Yes C Yes No Yes D No Yes Yesarrow_forward
- Plant stomata have guard cells. Guard cells will; Always leave the stomata open Close the stomata when conditions are moist Close the stomata when conditions are dryarrow_forwardWith stomata closed, a waterproof cuticle______ . a. minimizes water loss through plant surfaces b. permits gas exchange between the plant and the air c. both a and barrow_forwardWhich statement about C4 and CAM plants is TRUE? C4 and CAM plants have an additional carbon fixing enzyme C4 and CAM plants have reduced rates of cellular respiration. C4 plants separate initial carbon fixation from the light reactions There are no TRUE answers A pineapple is a C4 plant, agave is a CAM plant C4 plants open their stomata only at nightarrow_forward
- why do stomata open due to high humidity?arrow_forwardWhich of the following would allow a plant to tolerate a cold environment? Group of answer choices A. producing small, smooth leaves with a small boundary layer B. generating sparsely placed leaf hairs to reflect solar radiation C. increasing the proportion of unsaturated fatty acids in cell membranes D. increasing evapotranspiration E. increasing the proportion of leaf mass relative to total body massarrow_forwardGuard cells surround stomata on the surface of leaves. A new herbicide targets the function of guard cells and prevents them from becoming flaccid and closing the stomata. What effect would the herbicide have on plants? a.Plants would dry out because guard cells protect the epidermis against desiccation. b.Plants would be eaten because guard cells protect leaves against herbivores. c. Plants would dry out because stomata would not be able to close. d.lt would regulate the intake of minerals in the plants.arrow_forward
- Guard cellsa. are found primarily on the upper surface of leaves.b. open their stomata by shrinking.c. lack chloropolasts.d. close in response to abscisic acid.arrow_forwardGuard cells are usually the only epidermal cells that are photosynthetic. How does that feature relate to the mechanisms of stomatal opening and closing?arrow_forwardWhat is the reason that C3 plants must open their stomata even when the climate is hot and dry? Question 2 options: To take in CO To take in CO2 To take in water To let CO2 out of the leafarrow_forward
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