Consumer

Producer

(1) chloroplast → guard cell → leaf → oak tree 

 (2) guard cell → chloroplast → leaf → oak tree 

(3) oak tree → guard cell → leaf → chloroplast 

(4) oak tree → leaf → guard cell → chloroplast

(1) require carbon dioxide for cellular respiration 

(2) release oxygen as a product of cellular respiration 

(3) synthesize nutrients using carbon dioxide and water 

(4) break down sugars to assemble other molecules

 (1) detection of and reaction to stimuli in the environment 

(2) digestion of starches and absorption of protein from the internal environment 

  (3) diffusion of water and excretion of glucose to the external environment 

(4) transport of ATP and locomotion through the environment

correct, because water would be moving out of the cell into the salt solution

correct, because a high concentration of salt in the environment will force water into the cell, causing the contractile vacuole to pump

incorrect, because salt would be entering the cell, and the contractile vacuole would have to pump it out 

 incorrect, because the concentration of salt in the environment should not affect a cell