BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 25, Problem 11SA
Summary Introduction
Introduction:
The function of the stem in plants is to provide support and position to leaves for photosynthesis. The function of roots in a plant is to transport water and minerals, store food (in some plants), and it also anchors in the soil.
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Root hairs____ . a. conduct water from cortex to aboveground shoots b. increase the root’s surface area for absorption c. anchor the plant in soil
Is water primarily pushed or pulled up the plant?
A. Push
B. Pulled
Water transpires primarily from?
A. Only open stomata
B. Entire leaf surface
C. All stomata
In roots, growth of lateral branches beginsa. on the root epidermis.b. on the root hairs.c. at the ground meristem.d. at the pericycle.
Chapter 25 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
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- With 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_forwardPlant bends towards the source of light on account of the movement of curvature known as: A. geotropism B. thigmotropism C. chemotropism D. phototropismarrow_forwardThe activity of lateral meristems_____ older roots and stems. a. lengthens b. thickens c. both a and barrow_forward
- Roots differ from stems because roots lack a. vessel elements. b. nodes. c. an epidermis. d. ground tissue.arrow_forwardWhy do water molecules cohere to each other? A. Water is polar B. Covalent bonds form between water molecules C. The sugar in the xylem sap makes the water sticky Which of the following is a source? A. Fruits B. Young leaves C. Mature leaves Which of these is a sink? A. Roots B. Mature leavesarrow_forwardWhich plant organ exhibits only determinate growth? a. root b. stem c. leaf d. all organs above only grow determinatelyarrow_forward
- Minerals dissolved in watera. enter root epidermal cells by active transport.b. take an extracellular pathway through roots to thevascular cylinders.c. are transported up through phloem to the leaves.d. enter root cortex cells by diffusion.arrow_forwardWhich of the following is/are false regarding the phloem? A. It transports starch from the leaves to the stem. B. It transports sucrose from the leaves to the roots. C. It is located lateral to the xylem in tree stems. D. Unlike the xylem, majority of the cells are living. E. A and D F. B and Carrow_forwardAfter sucrose enters sieve tubes,a. it is removed by the source.b. water follows passively by osmosis.c. it is driven by active transport to the source, which is usuallythe roots.d. stomata open so that water flows to the leaves.e. All of these are correct.arrow_forward
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