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or water to flow up a plant stem, which of the following water potential flow patterns must be true? Question a. options:     stem→atmosphere→leaf→root→soil     soil→atmosphere→root→stem→leaf     leaf→stem→atmosphere→root→soil     atmosphere→leaf→stem→root→soil     soil→root→stem→leaf→atmos

or water to flow up a plant stem, which of the following water potential flow patterns must be true? Question a. options:     stem→atmosphere→leaf→root→soil     soil→atmosphere→root→stem→leaf     leaf→stem→atmosphere→root→soil     atmosphere→leaf→stem→root→soil     soil→root→stem→leaf→atmos

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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2) Answer the folowing ecology questions:
 
a. For water to flow up a plant stem, which of the following water potential flow patterns must be true?
Question a. options:
 

 

 stem→atmosphere→leaf→root→soil
 

 

 soil→atmosphere→root→stem→leaf
 

 

 leaf→stem→atmosphere→root→soil
 

 

 atmosphere→leaf→stem→root→soil
 

 

 soil→root→stem→leaf→atmosphere
 

 

b. Plants growing in soils with limited nitrogen would __________.
Question b. options:
 

 

 have a higher shoot-to-root ratio
 

 

 have a higher root-to-shoot ratio
 

 

 have a high relative growth rate
 

 

 have a lower root-to-shoot ratio
 

 

 have high rates of photosynthesis
 
 

c. What is net photosynthesis?

Question c. option:

 

 

 the conversion of light energy into sugar
 

 

 the total amount of carbon dioxide produced
 

 

 the difference between the amount of carbon dioxide assimilated and the amount of carbon dioxide produced
 

 

 the total amount of sugar produced
 

 

 the sum of the sugar and carbon dioxide produced
 
 
 

 

d. Which of the following statements about countercurrent heat exchange is FALSE?
Question d. options:
 

 

 Countercurrent heat exchange reduces moisture levels inside the lung cavity.
 

 

 Countercurrent heat exchange can keep heat out.
 

 

 Countercurrent heat exchange provides heat to cold blood.
 

 

 Countercurrent heat exchange cools hot blood.
 

 

 Countercurrent heat exchange can act to increase the power of muscles.
 

 

e. Ectotherms depend on internally generated, metabolic heat to maintain their body temperature.
Question e. options:
  True
  False
 

 

f. Ectothermy imposes a constraint on maximum body size for poikilotherms and restricts the distribution of the larger poikilotherms (such as crocodiles, alligators, and pythons) to consistently warm regions such as ___________________.
Question f. options:
 

 

 temperate wetlands
 

 

 tropics and subtropics
 

 

 polar regions
 

 

 None of these answers are correct
 

 

g. The only animals that are correctly termed endothermic homeotherms are:
Question g. options:
 

 

 birds and mammals
 

 

 mammals and fish
 

 

 fish and reptiles
 

 

 birds and reptiles
 

 

h. Lions ultimately obtain their energy from __________.
Question h. options:
 

 

 the sun
 

 

 plants
 

 

 their own bacterial gut fauna
 

 

 gazelles
 

 

 omnivores
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