Biodiversity MCQ. We covered all the Biodiversity MCQ in this post for free so that you can practice well for the exam.
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MCQ on Biodiversity for Students
Multiple interactions in the food chain make
(a) an Ecosystem
(b) a Biome
(c) the Food web
(d) the Environment
Option c – the Food web
The food chains that long have
(a) more energy in them
(b) less energy left
(c) the same energy
(d) None of the above.
Option b – less energy left
The physical factors and the living factors make the
(a) Environment
(b) Earth
(c) An ecosystem
(d) All of the above
Option c – An ecosystem
The last chain of food are
(a) Producers
(b) Decomposers
(c) Parasites
(d) None of the above
Option b – Decomposers
In an ecosystem, the function of the producers is to
(a) Convert organic compounds into inorganic compounds
(b) Trap solar energy and convert it into chemical energy
(c) Utilize chemical energy
(d) Release energy
……… are also called saprophytes.
(a) Producers
(b) Consumers
(c) Decomposers
(d) Parasites
Option c – Decomposers
A large ecosystem with its associated plants and animals is called
(a) Habitat
(b) Biome
(c) Biomass
(d) Biota
Option b – Biome
The accumulation of non-biodegradable substances in a food chain in increasing amounts at each higher trophic level is known as
(a) Accumulation
(b) Eutrophication
(c) Pollution
(d) Biomagnification
Option d – Biomagnification
In a food chain, the third trophic level is always occupied by
(a) Carnivores
(b) Herbivores
(c) Decomposers
(d) Producers
Option a – Carnivores
The flow of energy in an ecosystem is always
(a) Unidirectional
(b) Bidirectional
(c) Multi-directional
(d) No specific direction
Option a – Unidirectional
If the organic matter is decomposed
(a) It will mix with the soil
(b) It makes the soil fertile
(c) It helps to solve the problem of pollution
(d) All the above
Option d – All the above
In the food chain Crops →X→ Snake→Y→ decomposes X and Y are one of the following
(a) Crows, Vultures
(b) Crows, Hawk
(c) Rats, Dog
(d) Rats, Geese
Option d – Rats, Geese
In every food chain, green plants are
(a) decomposers
(b) producers
(c) consumers
(d) None of the above
Option b – producers
Biodegradable substances are those substances that
(a) can be broken down by the action of bacteria or other saprophytes.
(b) cannot be acted upon by physical processes like heat and pressure.
(c) persist in the environment for a long time.
(d) may harm the various members of the ecosystem.
Option a – can be broken down by the action of bacteria or other saprophytes
Which of the following is a non-biodegradable substance?
(a) Polythene
(b) Cotton cloth
(c) Leaves
(d) Vegetable peels
Option a – Polythene
All the interacting organisms in an area together with the non-living constituents of the environment form
(a) community
(b) ecosystem
(c) atmosphere
(d) soil
Option b – ecosystem
An ecosystem consists of
(a) an abiotic component comprising living organisms
(b) an abiotic component comprising physical factors
(c) Both (a) and (b)
(d) None of these
Option c – Both (a) and (b)
Which is the abiotic component of the ecosystem?
(a) Humus
(b) Bacteria
(c) Plants
(d) Fungi
Option a – Humus
Who coined the term ecosystem?
(a) Tansley
(b) Odum
(c) Warming
(d) Darwin
Option a – Tansley
Which chemical has been replaced recently?
(a) Malathion
(b) Chlorofluorocarbons
(c) Chloroform
(d) Ethylene dibromide
Option b – Chlorofluorocarbons
Growth, reproduction, and other activities of living organisms are affected by
(a) abiotic components only
(b) biotic components only
(c) both biotic and abiotic components
(d) some other factors
Option c – both biotic and abiotic components
Carnivores represent
(a) primary consumers
(b) secondary and tertiary consumers
(c) reducers
(d) zooplankton
Option b – secondary and tertiary consumers
Non-biodegradable waste is
(a) garbage
(b) metallic articles
(c) sewage
(d) waste paper
Option b – metallic articles
Which one of these is not a food chain
(a) Trees → Deer →Lion
(b) Plants → Man → Anaconda
(c) Plants → Insects → Frog → Snake →Kite
(d) Small → plants → Crabs → Fish → Swan → bird
Option b – Plants → Man → Anaconda
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