A. Photosynthesis
B. Assimilation of nitrogenous compounds
C. Chemosynthesis
D. Digestion or breakdown of organic compounds
Related Mcqs:
- The bacteria, which reduce nitrates in the soil to gaseous nitrogen, are known as denitrifying bacteria such as:
A. Nitromonas
B. Pseudomonas
C. Nostoc
D. Rhizobium - Which of the following is logical sequence of carbon cycle:
A. Photosynthesis-consumer-decomposer
B. Decomposer-consumer-photosynthesis
C. Photosynthesis-decomposer-consumer
D. Consumer-photosynthesis-decomposer - Mark the incorrect statement with reference to carbon cycle:
A. Lime rocks contribute to CO2 of water
B. Atmospheric CO2 gets dissolved in water
C. CO2 is returned by combustion of fuel
D. 75% of total carbon lies in geological component - Carbon cycle includes:
A. Producer, consumer, decomposer
B. Producer, consumer, producer
C. Producer, decomposer, consumer
D. Consumer, producer, decomposer - The bacteria which attack the dead animals are:
A. First link of the food chain and are known as primary producers
B. Second link of the food chain and are herbivorous
C. Third link of the food chain and are tertiary consumers
D. The end of the food chain and are decomposers - In an ecosystem, bacteria are considered as:
A. Microconsumers
B. Secondary consumers
C. Primary consumers
D. None of these - Bacteria and fungi in a forest ecosystem are generally:
A. Producers
B. Decomposers
C. Primary consumers
D. Secondary consumers
E. Tertiary consumers - According to Mc Dougal, the parasitism caused due to fungi and bacteria represent a symbiotic relationship which is:
A. Social and antagonistic
B. Nutritive and antagonistic
C. Social and reciprocal
D. Nutritive and reciprocal - Relationship between nitrogen fixing bacteria and a legume plant is described as:
A. Mutualistic
B. Parasitic
C. Saprophytic
D. Commensal - Nitrification takes place only in well aerated soils because the bacteria responsible for it are:
A. Aerobic
B. Anaerobic
C. Parasites
D. None of these
The correct answer to the question: "The main role of bacteria in the carbon cycle involves:" is "Digestion or breakdown of organic compounds".
