|
|
Click on the diagram to start the animation.
What name is given to the process seen in this animation? (Activity 37A)
|
| root hair exchange |
| ion pumping |
| carbonation |
| anion exchange |
| cation exchange |
|
|
|
The release of CO2 into the soil results in the formation of _____. (Activity 37A)
|
| hydrogen ions and oxygen ions |
| sodium ions and chloride ions |
| hydrogen ions and carbonate ions |
| carbonate ions and oxygen ions |
| potassium ions and calcium ions |
|
|
|
What process is the source of the CO2 that root hairs release into the soil? (Activity 37A)
|
| photosynthesis |
| respiration |
| photolysis |
| photosynthesis and respiration |
| respiration and photolysis |
|
|
|
The binding of H– ions to soil particles _____. (Activity 37A)
|
| displaces mineral cations |
| displaces mineral anions |
| promotes the clumping of soil particles |
| is counteracted by acid precipitation |
| displaces nitrates from soil particles |
|
|
|
Which of these ions is most likely to be leached from the soil? (Activity 37A)
|
| potassium ions |
| magnesium ions |
| calcium ions |
| chlorine ions |
| iron ions |
|
|
|
Acid precipitation _____. (Activity 37A)
|
| promotes the attachment of anions to soil particles |
| enhances the diffusion of cations into root hairs |
| has no effect on soil fertility |
| increases soil fertility |
| decreases soil fertility |
|
|
|
How do cations enter root hairs? (Activity 37A)
|
| osmosis |
| active transport |
| endocytosis |
| phagocytosis |
| diffusion |
|
|
|
Assimilation is indicated by the letter(s) _____. (Activity 37B) 
|
| A |
| B |
| C |
| C and D |
| D and E |
|
|
|
Nitrogen-fixing bacteria is(are) indicated by the letter(s) _____. (Activity 37B)
|
| A |
| A and B |
| B and C |
| C and D |
| D and E |
|
|
|
Nitrification is indicated by the letter(s) _____. (Activity 37B) 
|
| A |
| B |
| B and C |
| B and E |
| D and E |
|
|
|
Denitrifying bacteria convert _____ to _____. (Activity 37B)
|
| ammonium ... nitrogen gas |
| nitrates ... nitrogen gas |
| nitrogen gas ... ammonium |
| nitrogen gas ... nitrates |
| nitrogen gas ... nitrites |
|
|
|
Nitrifying bacteria convert _____ to _____. (Activity 37B)
|
| nitrogen gas ... ammonium |
| nitrogen gas ... nitrates |
| ammonium ... nitrites |
| nitrates ... nitrogen gas |
| ammonium ... nitrogen gas |
|
|
|
_____ removes nitrogen from the atmosphere. (Activity 37B)
|
| Denitrification |
| Nitrification |
| Mineralization |
| Nitrogen fixation |
| Assimilation |
|
|
|
Which one of these is a nitrate? (Activity 37B)
|
| NO2– |
| NH4– |
| NH2 |
| SH |
| NO3– |
|
|
|
Which one of these is a nitrite? (Activity 37B)
|
| NO2– |
| NH4– |
| NH2 |
| PO4– |
| NO3– |
