Medical Quiz

Environment Quiz


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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