Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 39, Problem 4TYK
According to the acid growth hypothesis,
- a. auxin stimulates membrane proton pumps.
- b. a lowered pH outside the cell activates expansins, which break cross-links between cellulose micro fibrils.
- c. the membrane potential created by the proton pumps enhances ion uptake, increasing the osmotic movement of water into cells, which then elongate.
- d. all of the above are involved in cell elongation.
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Check out a sample textbook solutionStudents have asked these similar questions
(1)
a. The process responsible for absorption of water by root hair of plants is :
a. Osmosis
b. Active transport
C.
Diffusion
b. The reason for my answer is because :
a. Concentration of cell sap is lower than that of soil water
b. Concentration of cell sap is higher than that of soil water
C. Movement of water molecules spending energy, opposing to diffusion
d. Water concentration of soil particles is lower than that of root hair cells
Transfer cells have the function of:
a. Moving sugar into the cell cytoplasm.
O b. Moving sugar through plasmodesmata.
C. Moving symplastic water into the cell.
d. Taking up water from the root hairs.
e. Moving water into the leaves.
Which of the following is NOT an accurate statement about the acid growth hypothesis?
Select one:
O A. Expansins are activated by high acidity in the cell wall
O B. It explains cell elongation in response to auxin
O C. Wedge- shaped expansin enzymes separate cross-linking polysaccharides from
microfibrils
O D. It proposes that auxin increases the activity of proton pumps in target cells
O E. Expansins cleave cross-linking polysaccharides
Next F
Chapter 39 Solutions
Study Guide for Campbell Biology
Ch. 39 - Prob. 1IQCh. 39 - What are the important steps in the transduction...Ch. 39 - What is the plans growth response? What types of...Ch. 39 - Explain how phytochrome can also indicate the...Ch. 39 - What are free-running periods?Ch. 39 - Indicate whether a short-day plant and a long-day...Ch. 39 - Prob. 7IQCh. 39 - Prob. 8IQCh. 39 - Prob. 9IQCh. 39 - Prob. 1SYK
Ch. 39 - Develop a concept map to illustrate your...Ch. 39 - Prob. 3SYKCh. 39 - Prob. 1TYKTCh. 39 - Prob. 2TYKTCh. 39 - Prob. 3TYKTCh. 39 - Prob. 4TYKTCh. 39 - Prob. 5TYKTCh. 39 - Prob. 6TYKTCh. 39 - Prob. 7TYKTCh. 39 - The body form within a species of plant may vary...Ch. 39 - Prob. 2TYKCh. 39 - Small molecules in the cell that amplify signals...Ch. 39 - According to the acid growth hypothesis, a. auxin...Ch. 39 - Which of the following situations would most...Ch. 39 - Prob. 6TYKCh. 39 - Prob. 7TYKCh. 39 - Prob. 8TYKCh. 39 - Prob. 9TYKCh. 39 - Prob. 10TYKCh. 39 - Prob. 11TYKCh. 39 - Prob. 12TYKCh. 39 - Prob. 13TYKCh. 39 - Prob. 14TYKCh. 39 - Prob. 15TYKCh. 39 - Which of the following is not a plant defense...Ch. 39 - Prob. 17TYK
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- When a cell from flaccid plant tissue is placed into a hypotonic solution: a. The cytoplasm will shrink and plasmolysis will occur b. Net water movement will be into the plant cell c. Lysosomes will remove the excess water, protecting the cell d. No net water movement will occur e. The plant cell will break open (lyse)arrow_forwardWhat did Went's experiments with the gelatin block demonstrate? A. Plants cannot be induced to bend during growth unless they are exposed to an indirect source of light. B. Light induces the coleoptile to produce a diffusible substance that moves to the growing region of a plant where it stimulates cells to elongate. C. Gelatin can enhance the movement of a soluble factor from the growing region of a plant to the coleoptile where it accelerates growth. D. When a plant tip is removed from a growing plant, the plant acquires the ability to bend toward the lightarrow_forwardFigure 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 occurredarrow_forward
- Which of the following is true of the water potential of a healthy living plant cell? ( SELECT ALL THAT APPLY) A. It has a higher solute potential (lower solute concentration) than the extracellular environment B. It is under negative pressure C. It has a lower solute potential (high solute concentration) than the extracellular enviroment D. It is under positive pressure E. It has a pressure potential equal to zeroarrow_forwardPlants obtain water and nutrients from the soil.a. What structure in a plant uses water in a metabolic reaction? What is this metabolic process called? b. Describe in detail two mechanisms by which water can move from the roots to this location c. If a plant was exposed to saltwater, how would it affect the above processes? Be specific, including a discussion of water potential d. How do plants absorb minerals from the soil? Does this process require energy?arrow_forwardAn experiment is conducted to determine the effect of classical music on the growth rate of marigolds (flowers). Two groups of plants are grown from seed in identical soil types, exposed to identical light conditions, and given the same nutrients. Group A is in a quiet atmosphere. The plants in group B provided with the same atmosphere, except that classical music is played for twelve hours daily in this area. The scientist measures the plants in both groups each day and records the data. In experimental design, Group A is known as.* experimental group control group non-experimental group O quasi-experimental grouparrow_forward
- i. Based on Figure 2, identify the structure that regulates the movement of water and minerals towards the xylem in the root ii. 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. iii. . Nitrate and phosphate are important anions for plants. Explain how the movement of protons (H+) influence the anions uptake across the plasma membrane of the root hair cellsarrow_forwardWhat is the biological function of SOS in plants? Select one: a. it is a calcium antiporter b. it is a sodium transporter c. it alleviates stress by seeking help during drought d. it improves calcium nutrition in plants e. it promotes salt sensitivityarrow_forwardWhat are ways in which plants accomplish tissue-level transport?a. transmembrane transport of solutes from one cell to anotherb. symplastic transport of materials from one cell to another viaplasmodesmatac. apoplastic transport of water and dissolved solutes through cell wallsand intercellular spacesd. All of the above are used for tissue-level transport.e. None of the above are used for tissue-level transport.arrow_forward
- Plant secondary cell walls are very similar to primary cell walls but have one added sugar that gives them more sturdiness (firmness). This extra sugar is... Select one: a. cellulose b. lignin c. GAGs d. pectinarrow_forward(2) a. Mineral salt is essential for growth of a plant. The process responsible for absorption of mineral salt is: a. Mass flow b. Diffusion Active transport C. d. Osmosis b. The reason for my answer is because : a. Absorption occurs due to concentration gradient b. Absorption occurs with the help of energy opposing to diffusion C. Movement as a bulk due to pressure changes d. Absorption through permeable membranesarrow_forwardPredict what will happen to the transportation of water and minerals through the plasma membrane if the root was poisoned and no cellular respiration occurredarrow_forward
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