Environment Quiz
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Commonly used method for enumeration of soil microbial population is:A.B.C.D.
A. Contact slide technique
B. Dilution plate technique
C. Microscopic count
D. Microbial respiration
How many tiger reserves are present in Karnataka
A. 50
B. 27
C. 8
D. 6
What are considered as bioindicators of air pollution
A. Mycorrhizae
B. Lichens
C. Rhizosphere
D. None of the above
Antagonistic substances released by microorganisms in the rhizosphere may allow plants to enter ………………. relationship with other plants.
A. commensal
B. symbiotic
C. amensal
D. competition
Which of the following relationships identifies a situation in which two species share a requirement for a limited resource thus reducing the fitness of one or both species? A
A. Parasitism
B. Competition
C. Decomposition
D. Mutualism
Neutralism occurs
A. When populations are in their favourable environment
B. In habitats with high population density
C. When organisms are in their growing stage.
D. Between microbial populations in a community with extremely different metabolic characteristics.
Match the following Picture (representation) to the Correct Symbiotic Relationship by drawing a line from the word to the picture that matches the relationship
A. A-A, B-A,C-B
B. A-B, B-C,C-C
C. A-C, B-B, C-A
D. A-C, B-B, C-C
What is the full form of BOD?
A. Bactorial oxygen demand
B. Biological oxygen demand
C. Biological oxide demand
D. None of these
The two components of a ecosystem are
A. Plants and animals
B. Biotic and Abiotic
C. Plants and light
D. Weeds and micro-organisms
The word Environment is derived from
A. Greek
B. French
C. Spanish
D. English
———is the type of endosymbiosis.
A. Cooperation
B. Commensalisms
C. Mutualism
D. Predation
What is the theme of environment day 2020
A. Beat air pollution
B. Beat plastic pollution
C. Celebrate Biodiversity
D. Connecting people to nature
Deforestation causes
A. More floods
B. Reduced rainfall
C. Soil erosion
D. All the above
The presence of autotrophic mycorrhiza enhances the uptake of nutrients in general, but particularly of:
A. Iron
B. Molybdenum
C. Phosphorus
D. Nitrogen
Skin microflora is an example of which relationship
A. parasitism
B. commensalism
C. syntrophism
D. amensalism
Rhizospheres affect microbial population and nutrient availability by:
A. Exerting physical pressure
B. Increasing pore space
C. Secreting nutritive metabolites and organic solvents
D. Changing soil structure
Rhizobia infect the host legumes through:
A. Cortex cells
B. Epidermal cells
C. Root hairs
D. All of the above
In Lichen, the fungle partener is called as————- a) . b) . c) . c) .
A. Phacobiont
B. Mycobiont
C. Photobiont
D. All of above
Phosphates enzyme play a major role in ______ of organic phosphates in soil:
A. Mineralization
B. Adsorption
C. Immobilization
D. None of these
Rhizosphere refers to the small area:
A. Around the root
B. Near the primary root
C. On the root
D. All of the above
The ultimate source of energy in an ecosystem is the
A. producers
B. Consumers
C. Sun
D. Decomposers
The microbes, which can survive at the temperature 25 – 30 C is termed as:
A. Thermoduric
B. Mesophilic
C. Psychrotrophic
D. Psychrophilic
———-is the obligatory interaction.
A. Mutualism
B. Commensalism
C. Ammensalism
D. Cooperation
Which energy source pollutes the environment?
A. Solar
B. Wind
C. Hydroelectric
D. Coal
Biofertilizer is a:
A. Mixture of organic matter and microorganism
B. Culture having the desired strain of microorganisms
C. Mixture of inorganic fertilizer and microorganism
D. Decomposed compost enriched with mineral solubilising bacteria
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