advantageous for the plant to always have phloem in close association with xylem
ID: 210162 • Letter: A
Question
advantageous for the plant to always have phloem in close association with xylem because: a the only way that phloem can deliver water to the stomata is if there is also wa b, the water that makes the "pressure-flow" mechanism work in phloem is mostly derived from ater in the xylem. xylem phloem needs nutrients from the xylem in order to deliver sugars to photosynthetic parenchyma cells d. this is how phloem companion cells can actively maintain the concentration of solutes in xylem. 13. A to becc eing equal, if the entire ascending limb of all the loops of Henle in an animal's kidney were rmeable to water, the animal would likely: a, juffer from a high degree of dehydration (water loss). removed from the blood. suffer toxic effects of nitrogenous and other waste products not being e suddenly start producing far less urine. d. be unable to get rid of excess water in its bloodstream and in tissues throughout the body. 4. Plants can alter the concentration of dissolved substances in the cytoplasm of root cortex cells in response to drying of the soil, but this strategy will only directly affect water movement through the a. transmembrane and apoplastic routes. b. symplastic and transmembrane routes. c. transmembrane route. d. symplastic route. e. apoplastic and symplastic routes.Explanation / Answer
14.
Answer :" B" symplastic and transmembrane pathway
The change in the concentration of cytoplasm of cortex cells directly affect the water movement through symplast & transmembrane pathway.
Symplast pathway is the movement of water between cytoplasm of two cells. This movement os facilitated by plasmodesmata the channel that connects the adjacent cells. Hence change in the cytoplamic concentration directly affects. the symplastic pathway
Transmembrane pathway is the diffusion of water through the plasma membranes. Since diffusion of water molecules depends on the concentration of cytoplasm of the cells, the change in concentration of cytoplasm also affects the transmembrane pathway directly
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