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Question

Match column I with column II and select the correct option from the given codes.

Column IColumn II
A. Gross primary productivity(i) Self-sustainable ecosystem
B. Net primary productivity(ii) Aquatic ecosystem
C. Pond(iii) O2 requiring process
D. Aquarium(iv) Photosynthesis production
E. Decomposition(v) Available to secondary consumers

A
A-(iv), B-(ii), C-(i), D-(iii), E-(v)
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B
A-(iv), B-(v), C-(i), D-(ii), E-(iii)
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C
A-(i), B-(iii), C-(ii), D-(iv), E-(v)
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D
A-(ii), B-(i), C-(iii), D-(v), E-(iv)
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Solution

The correct option is D A-(iv), B-(v), C-(i), D-(ii), E-(iii)
Column I Column II
A. Gross primary productivity Gross primary productivity, or GPP, is the rate at which solar energy is captured in sugar molecules during photosynthesis (energy captured per unit area per unit time). Producers such as plants use some of this energy for metabolism/cellular respiration and some for growth (building tissues).So the correct option is 'photosynthesis production'.
B. Net primary productivity Net primary productivity, or NPP, is gross primary productivity minus the rate of energy loss to metabolism and maintenance. In other words, it's the rate at which energy is stored as biomass by plants or other primary producers and made available to the consumers in the ecosystem.
So the correct option is 'available to secondary consumers'.
C. Pond Since a pond is a natural ecosystem, it has all the biotic and abiotic components in it. These components are interlinked with each other for ensuring the survival of the organisms there, hence it is a self sustaining unit.
So the correct option is 'self-sustaining ecosystem'.
D. Aquarium In an aquatic ecosystem rocks are needed for shelter and plants provide oxygen for fish. An ecosystem is balanced when the natural animals and plants and non-living components are in harmony- i.e. there is nothing to disturb the balance. An aquarium comprises of green plants, fish and other aquatic animals. Water, sand (or gravel etc.), temperature, light, etc. are also present the abiotic factors.
So the correct option is 'aquatic ecosystem'.
E. Decomposition The process of decomposition — the breakdown of raw organic materials to a finished compost — is a gradual complex process, one in which both chemical and biological processes must occur in order for organic matter to change into compost. The decomposition (stabilization) of organic matter by biological action has been taking place in nature since life first appeared on our planet. When organic materials decompose in the presence of oxygen, the process is called “aerobic.” The aerobic process is most common in nature. For example, it takes place on ground surfaces such as the forest floor, where droppings from trees and animals are converted into a relatively stable humus. There is no accompanying bad smell when there is adequate oxygen present.
So the correct option is 'O2 requiring process'.

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