What is the theme of environment day 2020
A. Beat air pollution
B. Beat plastic pollution
C. Celebrate Biodiversity
D. Connecting people to nature
Skin microflora is an example of which relationship
Rhizohium culture is used to increase biological nitrogen fixation in….
A. Cereals crops
B. Pulse crops
What is the full form of BOD?
A. Bactorial oxygen demand
B. Biological oxygen demand
C. Biological oxide demand
D. None of these
———-is the obligatory interaction.
Phosphates enzyme play a major role in ______ of organic phosphates in soil:
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
Antagonistic substances released by microorganisms in the rhizosphere may allow plants to enter ………………. relationship with other plants.
Taj Mahal is threatened due to
A. Sulphur dioxide
B. Carbon dioxide
C. Carbon monoxide
D. Water vapour
Rhizosphere refers to the small area:
A. Around the root
B. Near the primary root
C. On the root
D. All of the above
Which of these activities is eco-friendly?
A. Cars for transportation
B. Polybags for shopping
C. Windmills for generating power
D. Dyes for colouring clothes
The microbes, which can survive at the temperature 25 – 30 C is termed as:
The fungal mycelium in Mycorrhizae penetrates the root cells by means of projections called———
C. Absorbing organ
In plants, respiration occurs
A. During the day only
B. During the night only
C. During day and night
D. Only when photosynthesis does not take place
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.
Which of these play a very important role in causing rain fall
Lichen is the symbiotic association of—————-
A. Fungi & Bacteria.
B. Fungi & Algae
C. Algae & Bacteria
D. Protozoa & Virus
The word Environment is derived from
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
A. Soil animals
B. Soil plants
C. Soil enzymes
D. None of the above
E. All of the above
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
In Lichen, the fungle partener is called as————- a) . b) . c) . c) .
D. All of above
The presence of autotrophic mycorrhiza enhances the uptake of nutrients in general, but particularly of:
Which energy source pollutes the environment?
How many tiger reserves are present in Karnataka
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