Tag: interdependence between plants and animals
Questions Related to interdependence between plants and animals
For recycling of materials, which of the following is most necessary?
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Producers
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Consumers
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Decomposers
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None of the above
Biogeochemical cycle mainly involves the exchange of materials between biotic and abiotic components of the biosphere. The bio - genetic nutrients are essential elements required by organisms for their body building and metabolism which are provided by earth and returned to earth after the death of organisms and/or through excreta of animals. The decay of excreta and dead bodies of organisms is carried out be decomposers. The activity of decomposers releases the bio - genetic nutrients from excreta and dead bodies of organisms. Hence decomposition activity is most important part of biogeochemical cycles. Else all the nutrients will slowly become trapped in excreta and dead bodies of organisms.
Which one of the following is a decomposer?
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Fungi
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Algae
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Protozoa
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Insect
The fungi generally feeds on the dead remains of plants and animals where they break the complex organic substances into the simpler ones through the digestive action. These decomposed material act as a humus for soil and they increase the fertility of the soil. The fungi and the bacteria are the common examples of decomposers.
Maintenance of soil fertility without addition of nutrition is due to
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Floods
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Crop residue
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Favourable temperature
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Microbial activity
Soil fertility is the ability of a soil to sustain agricultural plant growth. It is maintained without addition of nutrition due to microbial activity. Microbes increase the amount of nutrients in soil available for plants. Maintaining soil fertility naturally using microbes can reduce the need for synthetic fertilizers and pesticides.
Most animals that live in deep oceanic water are
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Primary consumers
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Secondary consumers
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Tertiary consumers
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Detritivores
Most animals that live in deep oceanic water are detritivores. They are also called as scavengers. Most of them living in deep ocean include crustaceans and polychaetes.
Trophic level in a food chain which cycles the various materials between environment and living organisms is constituted by
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Producers
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Consumers
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Decomposers
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All of the above
Decomposers of an ecosystem include
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Microscopic animals
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Bacteria and fungi
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Both A and B
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Bacteria, fungi and macroscopic animals
Which one is detritus feeder
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parrot
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Sheep
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Unio
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Dung beetle
Decomposers are organisms that
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Elaborate chemical substances, causing death of tissues
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Operate in living body and simplifying oragnic substance of cells step by step
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Attack and kill plants as well as animals
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Operate in relay terms, simplifying step by step the organic constituents of dead body
Exlusively scavenger bird is
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Vulture
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Own
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Kite
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Duck
Which of the following is a decomposer?
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Lichen
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Rhizopus
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Algae
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Carnivores