Jan 29 12:59 PM Bio QUESTION 22 Why does water have such good thermal properties
ID: 187690 • Letter: J
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Jan 29 12:59 PM Bio QUESTION 22 Why does water have such good thermal properties? O Hydrogen bonding leads to surface tension, which reflects sunlight. O Extensive hydrogen bonding absorbs energy for a very high specific heat capacity. 1 points Save Answer The latent heat of vaporization, the amount of energy required to break H bonds to get liquild water into the vapor phase, is one of the highest for any liquid. O All of the above are correct. Band C are correct. QUESTION 23 1 points Save Answer Two identical plants are taking water up into their roots at the same rate. One plant is growing in soil watered with pristine (pure) rain water, the other is growing in brackish water containing -50 mM NaCI (s- 0.244 MPa). How is it that both plants can take up water at the same rate? O They cannot take up water at the same rate, the one growing in brackish water has to be slower The solutes in the surrounding water have no impact on events in the root The plant in brackish water reduces the solute potential in the xylem (makes it more negative) to compensate The plant in brackish water increases the solute potential in the xylem (makes it less negative) to compensate OThe plant in brackish water reduces the casparian strip to allow more water to enter. Click Save and Submit to sove and submit. Click Save All Answers to save all answersExplanation / Answer
answer - B and C
Water's high heat capacity is a property caused by hydrogen bonding among watermolecules. When heat is absorbed, hydrogen bonds are broken and watermolecules can move freely. When the temperature of water decreases, the hydrogen bonds are formed and release a considerable amount of energy. Water has highest latent heat of vaporization.
ANSWER - C
the osmotic potential in plants must always be more negative than the osmotic potential in soils, so that water can move from soil into the cells of plant roots. Solute potential (s) decreases with increasing solute concentration; a decrease in s causes a decrease in the total water potential. The internal water potentialof a plant cell is more negative than pure water; this causes water to move from the soil into plant roots via osmosis
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