Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 34, Problem 11TYU
There is a trade-off between photosynthesis and transpiration in leaves because (a) numerous stomatal pores provide both gas exchange for photosynthesis and openings through which water vapor escapes (b) a waxy layer, the cuticle, reduces water loss (c) blue light triggers an influx of potassium ions (K+) into the guard cells (d) leaves of deciduous plants abscise as winter approaches in temperate climates (e) stomata are closed at night, although water continues to move into the roots by osmosis
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Photosynthesis ceases when leaves wilt, mainly because(A) the chlorophyll in wilting leaves is degraded.(B) accumulation of CO2 in the leaf inhibits enzymes.(C) stomata close, preventing CO2 from entering the leaf.(D) photolysis, the water-splitting step of photosynthesis,cannot occur when there is a water deficiency.
Two major processes are involved in the dissipation of heat from plant leaves: convection of heat, and(a) Photosynthesis (b) Stomatal Conductance (c) Mineral Nutrition (d) Transpiration (e) Growth
A) The concentration of CO2 is lower inside a plant cell than in the atmosphere (outside the cell). In your own words, describe how the CO2 levels are kept low inside the plant cell and explain why this is necessary. Assume stomata are open.
B) Regarding the situation presented in Part A and assuming that the stomata of the plant leaves are closed, would this favour the induction of photorespiration in a C3 plant? Explain. Make reference to relevant molecule or molecules as needed.
Please clearly label your responses as A and B
Chapter 34 Solutions
Biology (MindTap Course List)
Ch. 34.1 - Prob. 1LOCh. 34.1 - Prob. 2LOCh. 34.1 - Prob. 3LOCh. 34.1 - Prob. 4LOCh. 34.1 - How are leaves adapted to conserve water?Ch. 34.1 - Prob. 2CCh. 34.1 - What are the two types of vascular tissue in a...Ch. 34.1 - How is the leaf organized to deliver the raw...Ch. 34.2 - Prob. 5LOCh. 34.2 - Prob. 6LO
Ch. 34.2 - How does blue light trigger stomatal opening?Ch. 34.2 - Prob. 2CCh. 34.3 - Discuss transpiration and its effects on plants.Ch. 34.3 - Prob. 8LOCh. 34.3 - Prob. 1CCh. 34.3 - How do environmental factors (sunlight,...Ch. 34.3 - Prob. 3CCh. 34.3 - Prob. 4CCh. 34.4 - Define leaf abscission, explain why it occurs, and...Ch. 34.4 - Why do many woody plants living in temperate zones...Ch. 34.4 - Prob. 2CCh. 34.4 - Prob. 3CCh. 34.5 - Prob. 10LOCh. 34.5 - Prob. 1CCh. 34.5 - Prob. 2CCh. 34.5 - What are some of the specialized features of the...Ch. 34 - Prob. 1TYUCh. 34 - Prob. 2TYUCh. 34 - Prob. 3TYUCh. 34 - Prob. 4TYUCh. 34 - Which of the following is not an adaptation of...Ch. 34 - Prob. 6TYUCh. 34 - At sunrise, the accumulation in the guard cells of...Ch. 34 - Prob. 8TYUCh. 34 - Prob. 9TYUCh. 34 - Modified leaves that enable a stem to climb are...Ch. 34 - There is a trade-off between photosynthesis and...Ch. 34 - Suppose that you are asked to observe a micrograph...Ch. 34 - Prob. 13TYUCh. 34 - Prob. 14TYUCh. 34 - What might be some of the advantages of a plant...Ch. 34 - Prob. 16TYUCh. 34 - Prob. 17TYU
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- Gas exchange in a plant's leaf consists of _____ entering the leaf tissue, and _____ exiting from it. A)oxygen (O2); carbon dioxide B)carbon dioxide; ammonia C)carbon dioxide; oxygen (O2) D)water; carbon dioxide 16.arrow_forwardWhich of the following would tend to increase transpiration?(A) spiny leaves(B) sunken stomata(C) a thicker cuticle(D) higher stomatal densityarrow_forwardGive comparison between the following:(a) C3 and C4 pathways(b) Cyclic and non-cyclic photophosphorylation(c) Anatomy of leaf in C3 and C4 plantsarrow_forward
- Stomata can open and close in order to modulate the transpiration stream and allow for exchange of oxygen and CO2. Stomata OPEN by…arrow_forwardMovement of phloem sap from a source to a sink(A) occurs through the apoplast of sieve-tube elements.(B) depends ultimately on the activity of proton pumps.(C) depends on tension, or negative pressure potential.(D) results mainly from diffusion.arrow_forwardWhich one of the plant growth regulators would you use if you are asked to:(a) induce rooting in a twig(b) quickly ripen a fruit(c) delay leaf senescence(d) induce growth in axillary buds(e) ‘bolt’ a rosette plant(f) induce immediate stomatal closure in leaves.arrow_forward
- Explain the difference between symplast and transmembrane water transport pathways in plants. (i) (ii) Explain positive hydrostatic pressure in the root and conditions causing the root pressure. What is the phenomenon likely caused by this root pressure? (iii) Describe the phenomenon observed in Question 1 c) (ii) with inclusion of plant structures involved.arrow_forwardPhotosynthesis sustains plant growth, and inputs of sunlight sustain photosynthesis. Why, then, do seedlings that germinate in a fully darkened room grow taller than seedlings of the same species that germinate in full sun?arrow_forward(a) What is lignin in plant? What is the amount of lignin in hardwood, softwood, and weeds? (b) Explain the KOH activation of lignin derived porous carbon for lithium- ion batteries.arrow_forward
- Plants under biotic stress will rapidly increase concentration of reactive oxygen species (ROS). (i) The above oxidative burst will happen at cellular level. Describe the observable symptoms by naked eyes and explain the symptoms development at cellular level. (ii) Explain the roles of ROS in plant defense. (iii) Which part of plant cell initiates oxidative burst?arrow_forwardSuggest why phototropism is important for plants. Phototropism causes plants to ..... This means more ..... ..... The plant uses this forarrow_forwardA plant gets rid of excess water through transpiration. Which is a method used by plants to get rid of solid waste products? (A) Shortening of stem (B) Dropping down of fruits (C) Shedding of yellow leaves (D) Expansion of roots into the soil 8.arrow_forward
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