Environment Quiz
Preview:
The ultimate source of energy in an ecosystem is the
A. producers
B. Consumers
C. Sun
D. Decomposers
Phosphates enzyme play a major role in ______ of organic phosphates in soil:
A. Mineralization
B. Adsorption
C. Immobilization
D. None of these
Lichen is the symbiotic association of—————-
A. Fungi & Bacteria.
B. Fungi & Algae
C. Algae & Bacteria
D. Protozoa & Virus
The fungal mycelium in Mycorrhizae penetrates the root cells by means of projections called———
A. Hausteria
B. Arbuscules
C. Absorbing organ
D. None
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
———is the type of endosymbiosis.
A. Cooperation
B. Commensalisms
C. Mutualism
D. Predation
Dehydrogenase is an endoenzyme
A. TRUE
B. FALSE
C. Don’t know
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
What is the full form of BOD?
A. Bactorial oxygen demand
B. Biological oxygen demand
C. Biological oxide demand
D. None of these
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
Rhizobia infect the host legumes through:
A. Cortex cells
B. Epidermal cells
C. Root hairs
D. All of the above
Skin microflora is an example of which relationship
A. parasitism
B. commensalism
C. syntrophism
D. amensalism
The two components of a ecosystem are
A. Plants and animals
B. Biotic and Abiotic
C. Plants and light
D. Weeds and micro-organisms
———-is the obligatory interaction.
A. Mutualism
B. Commensalism
C. Ammensalism
D. Cooperation
The microbes, which can survive at the temperature 25 – 30 C is termed as:
A. Thermoduric
B. Mesophilic
C. Psychrotrophic
D. Psychrophilic