Biological Classification And System Of Classification Question 139
Question: One of the useful activities of several bacteria is
[MP PMT 1998]
Options:
A) Nitrogen fixation
B) Nitrification
C) Operation of biogeochemical cycles
D) All of the above
Show Answer
Answer:
Correct Answer: D
Solution:
Some bacteria can fix atmospheric nitrogen, e.g., Azotobacter and Clostridium, while others convert ammonia into nitrate, e.g., Nitrosomonas.
A biogeochemical cycle or substance turnover or cycling of substances is a pathway by which chemical nutrients like carbon, oxygen, nitrogen, phosphorus, calcium, and water etc move through both biotic and abiotic compartments of earth.
All of these are required to carry out basic life processes as these processes supply with energy and nutrients.
Thus, the correct answer is option D.
BETA
