Multiple Choice:
1. Which organisms are capable of converting gaseous nitrogen in the air into a form that other organisms can use?
A. Nitrogen-Fixing Bacteria
B. Denitrifying Bacteria
C. Decomposers
D. Producers
2. Which step in the nitrogen cycle is accelerated at the beginning of the eutrophication process?
A. Denitrification
B. Nitrogen Fixation
C. Producer Uptake Of Nitrogen
D. Consumer Decomposition
3. Which Of The Following is carried out by denitrifying bacteria?
A. Break down large, nitrogen-rich molecules to simple molecules
B. Build large, nitrogen-rich molecules from simple molecules
C. Convert biologically useful nitrogen to gaseous nitrogen
D. Convert gaseous nitrogen to biologically useful nitrogen
4. Which type of organism moves nitrogen from cells of producers back to the soil?
A. Decomposers
B. Consumers
C. Nitrogen-Fixing Bacteria
D. Denitrifying Bacteria
5. What would be the consequence of an ecosystem that had no nitrogen-fixing bacteria?
A. Nitrogen from decomposing animals would never be returned to the soil
B. Decomposers would not be able to break down the nitrogen present in plants they feed
C. Plants would have to rely on biologically available nitrogen present in the soil.
D. Consumers would not survive since they would have no way to obtain the nitrogen they need.
My Answers:
1. A (nitrogen-fixing bacteria)
2. ??? (Im Sorry This One Is The One I Really Cant Figure out)
3. C (convert biologically useful nitrogen to gaseous nitrogen)
4. A (decomposers)
5. C (Plants would have to rely on biologically available nitrogen present in the soil)
If You Would Pllease be kind Enough To Tell Me What You Think. It WOuld Mean The world To Me :P LOL
Thanks Again <3 Abby
OOPS! Typo Sorry. Please*
1. Your answer is correct! Nitrogen-fixing bacteria are capable of converting gaseous nitrogen in the air into a form that other organisms can use.
2. The correct answer for this question is B. Nitrogen fixation is the step in the nitrogen cycle that is accelerated at the beginning of the eutrophication process. Eutrophication is the process where excessive nutrients, such as nitrogen, enter water bodies, leading to an increase in algae and other aquatic plant growth.
3. Your answer is incorrect. The correct answer is A. Denitrifying bacteria actually break down large, nitrogen-rich molecules to simple molecules. They convert nitrogen compounds, like nitrate (NO3-) and nitrite (NO2-), back into gaseous forms such as nitrogen gas (N2) and nitrous oxide (N2O).
4. Your answer is correct! Decomposers are the organisms that move nitrogen from the cells of producers (plants) back to the soil. They break down dead organic matter, releasing nitrogen compounds back into the environment.
5. Your answer is incorrect. The correct answer is A. If there were no nitrogen-fixing bacteria in an ecosystem, nitrogen from decomposing animals would never be returned to the soil. Nitrogen-fixing bacteria are able to convert gaseous nitrogen into a form that plants can utilize, which then enters the food chain through plant consumption by animals. Without nitrogen-fixing bacteria, the nitrogen would not be available for other organisms in the ecosystem.