Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 36, Problem 9TYU
EVOLUTION CONNECTION Large brown algae called kelps can grow as tall as 25 m. Kelps consist of a holdfast anchored to the ocean floor, blades that float at the surface and collect light, and a long stalk connecting the blades to the holdfast (see Figure 28.12). Specialized cells in the stalk, although nonvascular, can transport sugar. Suggest a reason why these structures analogous to sieve-tube elements might have evolved in kelps.
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Chapter 36 Solutions
Campbell Biology
Ch. 36.1 - Why is long-distance transport important for...Ch. 36.1 - Some plants can detect increased levels of light...Ch. 36.1 - WHAT IF? If you prune a plant's shoot tips, what...Ch. 36.2 - If a plant cell immersed in distilled water has a...Ch. 36.2 - Prob. 2CCCh. 36.2 - How would the long-distance transport of water be...Ch. 36.2 - Prob. 4CCCh. 36.3 - Prob. 1CCCh. 36.3 - WHAT IF? Suppose an Arabidopsis mutant lacking...Ch. 36.3 - MAKE CONNECTIONS How are the Casparian strip and...
Ch. 36.4 - Prob. 1CCCh. 36.4 - Prob. 2CCCh. 36.4 - WHAT IF? If you buy cut flowers, why might the...Ch. 36.4 - Prob. 4CCCh. 36.5 - Prob. 1CCCh. 36.5 - Prob. 2CCCh. 36.5 - Prob. 3CCCh. 36.5 - WHAT IF? Apple growers in Japan sometimes make a...Ch. 36.6 - How do plasmodesmata differ from gap junctions?Ch. 36.6 - Prob. 2CCCh. 36.6 - WHAT IF? Suppose plants were genetically modified...Ch. 36 - How did the evolution of xylem and phloem...Ch. 36 - Is xylem sap usually pulled or pushed up the...Ch. 36 - Prob. 36.3CRCh. 36 - Prob. 36.4CRCh. 36 - Prob. 36.5CRCh. 36 - By what mechanisms is symplastic communication...Ch. 36 - Prob. 1TYUCh. 36 - Prob. 2TYUCh. 36 - Prob. 3TYUCh. 36 - Photosynthesis ceases when leaves wilt, mainly...Ch. 36 - Prob. 5TYUCh. 36 - A plant cell with a of -0.65 MPa maintains a...Ch. 36 - Compared with a cell with few aquaporin proteins...Ch. 36 - Prob. 8TYUCh. 36 - EVOLUTION CONNECTION Large brown algae called...Ch. 36 - SCIENTIFIC INQUIRY INTERPRET THE DATA A Minnesota...Ch. 36 - SCIENTIFIC INQUIRY Cotton plants wilt within a few...Ch. 36 - WRITE ABOUT A THEME: ORGANIZATION Natural...Ch. 36 - Prob. 13TYU
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- EVOLUTION LINK The number of protonephridia in a planarian is related to the salinity of its environment. Planaria inhabiting slightly salty water develop fewer protonephridia than those inhabiting less salty water, but the number of protonephridia quickly increases when the concentration of salt in the environment is lower. How is this increase adaptive? Explain.arrow_forwardIf you were to open the container at the end of the stalk shown in the image below, the cells you would find within would eventually grow into: Open me! A sporophyte A fern A gametophytearrow_forwardPlants in Clade Streptophyta and the green algae share a number of common traits, except for which choice? -both have cellulose in their cell walls. -both are multicellular -both are autotrophic. -both have apical meristems -both have chlorophyll a and b.arrow_forward
- 1.Explain how vascular tissue allows vascular plants to be larger than nonvascular plants? Make reference to function of vascular tissue and how nonvascular plants obtain water and nutrients. 2.Describe why diffusion alone is an ineffective strategy to move nutrients/exchange gases in larger multicellular organisms. 3.Using your Life Concept Map as a reference, compare and contrast (give an account of similarities and differences between two items, referring to both items throughout the answer) a representative species from two similar kingdoms. A T chart or table might be a good way to organize your answers.arrow_forwardSuppose an efficient conducting system evolved in a moss that could transport water and other materials as high as a tall tree. Which of the following statements about “trees” of such a species would not be true? (A) Spore dispersal distances would probably increase. (B) Females could produce only one archegonium. (C) Unless its body parts were strengthened, such a “tree” would probably flop over. (D) Individuals would probably compete more effectively for access to light.arrow_forwardHow do you recognize the following in a plant cell a chloroplast a vacuole a raphid a cystolith Why is the cell wall important in plant design? In terms of structure and composition, differentiate between primary and secondary cell walls. Tabulate the differences between typical dicot and typical monocot stems with respect to arrangement of the three tissue systems.arrow_forward
- One evident apomorphy evolved in vascular plants is the establishment of true leaves which is characterized by the incorporation of the vascular system. Select one: True False The calyptra in mosses generally function in the regulation of gas exchange and water uptake. Select one: True False Elaters are non-sporogenous cells with spiral wall thickenings and is mainly for spore dispersal of liverworts. Select one: O True Falsearrow_forwardSuppose an efficient conducting system evolved in a moss thatcould transport water and other materials as high as a tall tree.Which of the following statements about “trees” of such aspecies would not be true?(A) Spore dispersal distances would probably increase.(B) Females could produce only one archegonium.(C) Unless its body parts were strengthened, such a “tree”would probably flop over.(D) Individuals would probably compete more effectively foraccess to light.arrow_forwardAt Walden pond part 2: You gently pull up a plant and see fine white filaments covering the roots (see photos bleow). Thin sections through the roots and filaments show the filaments surrounding the root and penetrating between the plant cells of the root. (photo below; arrows indicate filaments penetrating root)arrow_forward
- Xerophytes have adaptations such as having a waxy leaf cuticle that will make them survive in hot and dry environments. How does this adaptation help reduce water loss? * It increases the ability of the leaf cells to absorb water. NO answer It reduces the surface area for transpiration. It is impermeable to water, thus stops evaporation. It traps moist air, which increases the humidity and reduces the diffusion of water vapor.arrow_forwardEvolutionary Group(s) Refer to figure 2 on page 2 of the lab. What color(s) is/are this organism? Does it contain chlorphyll? Is there a "photosymbiont" present (refer to the lichens of Wisconsin guide) Describe the structure and composition of this organism - does it have leaves, roots, thallus, rhizine, mycelia, fruiting bodies (etc.) How else might you distinguish this organism from another organism in this table Lichen Fungi Slime Mold Plantsarrow_forwardVascular plants evolved to have the apomorphic characteristics that enabled them to grow with greater height and thrive with efficiency in sustaining more complex structures. Select one: O True O False The sporophyte structure in vascular plants is dependent on the gametophyte structure. Select one: True False The presence of lignin in the secondary cell wall structure of vascular plants acts as a cementing agent between cellulose fibrils. Select one: True Falsearrow_forward
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