Ecosystem Quiz:
The word ‘‘ecosystem’’ was first coined by
(a) Weaver and Clements
(b) A.G. Tansley
(c) E.P. Odum
Ans. (b)
An ecological system is a
(a) Biological system
(b) Biogeochemical system
(c) Physicochemical system
(d) Bioecological system
Ans. (d)
The ’pulse’ of the aquatic environment can be ascertained by measuring
(a) nitrogen
(b) oxygen
(c) alkalinity
(d) conductivity
Answer. (b)
In an ecosystem
(a) Cycling of energy and nutrients is a coupled process
(b) Cycling for energy is an independent process.
(c) The movement of energy is unidirectional
(d) Macro and micronutrients cycle at the same pace
Ans. (c)
Which one of the following is an aquatic ecosystem?
(a) Wetland
(b) Desert
(c) Mountain
(d) Island
Ans. (d)
Which among the following is an abiotic factor?
(a) Mites
(b) Moisture
(c) Insects
(d) Rodents
Answer. (b)
The rate of deforestation is high in
(a) Tropical zone
(b) Desert areas
(c) Temperate zone
(d) Boreal forest
Ans. (c)
Which among the following is not an example of aquatic habitat?
(a) Ponds
(b) Swamps
(c) Lakes
(d) Forests
Ans. (d)
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Which among the following shows unidirectional flow in an ecosystem?
(a) Carbon
(b) Oxygen
(c) Nitrogen
(d) Energy
Ans. (d)
An ecosystem that can be easily damaged but can recover after some time if the damaging effect stops will have
(a) Low stability and low resilience
(b) High stability and high resilience
(c) Low stability and high resilience
(d) High stability and low resilience
Ans. (c)
Which one of the following is the indirect use of forests?
(a) Medicinal plants
(b) Checking soil erosion
(c) Building material
(d) Grazing
Answer. (b)
All the ecosystems in a geographical area form a bigger unit called.
(a) biosphere
(b) territory
(c) biome
(d) community
Ans. (c)
The Brackish water ecosystem contains a high amount of __ content
(a) salt
(b)sugar
(c) iron
(d) manganese
Ans. (a)
Anmanmadeial ecosystem is
(a) Less in diversity
(b) More in Diversity
(c) Man does not make an ecosystem
(d) More stable than the natural Ecosystem
Ans. (a)
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A natural region has the similarity of
(a) climate and natural vegetation
(b) climate and occupation
(c) soil and drainage
(d) economic base and recess
Ans. (a)
An artificial ecosystem is represented by.
(a) pisciculture tank
(b) agricultural land
(c) zoo
(d) aquarium
Ans. (d)
Gardens are examples of
(a) Natural ecosystems
(b) Artificial ecosystems
(c) Ecology
(d) Environment
Ans. (b)
Which is the most stable Ecosystem?
(a) Desert
(b) Ocean
(c) Mountain
(d) Forest
Answer. (b)
Which among the following is not a natural ecosystem?
(a) Forest
(b) Pond
(c) Lake
(d) Gardens
Ans. (d)
Which Ecosystem shows maximum genetic diversity?
(a) Coniferous forests
(b) Tropical rainforests
(c) Subtropical forests
(d) Temperate forests
Ans. (b)
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Forests are examples of
(a) Natural ecosystems
(b) Artificial ecosystems
(c) Virtual Environment
(d) Synthetic Environment
Ans. (a)
The biotic part of the Ecosystem includes
(a) Producers
(b) Consumers
(c) Decomposers
(d) All of these
Ans. (d)
Which among the following constitutes the upper part of the aquatic Ecosystem?
(a) Fishes
(b) Planktons
(c) Algae
(d) Crustaceans
Ans. (b)
An ecosystem consists of.
(a) A living community and its environment
(b) All the plants and animals of an area
(c) Carnivores and herbivores of an area
(d) Producers, consumers, and decomposers in a particular locality
Ans. (a)
Which is the largest existing mangrove forest in the world?
(a) African forest
(b) Alpine forest
(c) Sunderbans
(d) Australian forest
Answer. (c)
The Ecosystem consists of
(a) Producers
(b) Consumers
(c) Decomposers
(d) All of these
Ans. (d)
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Which one of the following is a terrestrial ecosystem?
(a) Pond
(b) Lake
(c) Semi-arid area
(d) river
Ans. (c)
Which of the following is an artificial ecosystem?
(a) Rice-field
(b) Forest
(c) Grassland
(d) Lake
Ans. (a)
Which of the following is a “dynamic living entity”?
(a) Tree
(b) Water
(c) Forest
(d) Air
Ans. (c)
Ecosystem is defined as
(a) Relation between plants and animals
(b) Relation between biotic and physical components
(c) Relation between producers and decomposers
Ans. (b)
The evergreen rainforest is mainly found in regions with well-distributed annual rainfall.
(a) Below 50 cm
(b) 50-100 cm
(c) 100-200 cm
(d) More than 200 cm
Ans. (d)
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The lentic Ecosystem includes which of the following water:
(a) Rain
(b) Running
(c) Standing
(d) Gravitational
Ans. (c)
In an ecosystem with abiotic components, which of the following occurs
(a) Flow of energy
(b) Cycling of materials
(c) Consumers
(d) Flow of energy and cycle of materials
Ans. (d)
Bamboo is classified as
(a) Tree
(b) Grass
(c) Shrub
(d) Herb
Answer. (b)
Ecosystem may be defined as
(a) Group of plants which act as the energy suppliers
(b) Group of organisms which form a population
(c) Functional unit for ecological studies
Ans. (c)
In a pond ecosystem, benthos means
(a) Primary consumers in the depth of a pond
(b) Zooplankton on the water surface
(c) Periphyton
(d) Epineuston
Ans. (a)
Which of the following ecosystems would be most stable?
(Manmadeade forest
(b) Freshwater lake
(c) Saline Lake
(d) Natural forest
Ans. (d)
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Ecological pyramids are of
(a) Two types
(b) Three types
(c) Four types
(d) Five types
Ans. (b)
A lake ecosystem is
(a) Artificial
(b) Abiotic
(c) Natural
(d) Hydrological
Ans. (c)
In an ecosystem, bacteria are considered as
(a) Microconsumers
(b) Macroconsumers
(c) Primary consumers
(d) Secondary consumers
Ans. (a)
The ecosystem lithosphere is concerned with
(a) Gases
(b) Minerals
(c) Water
Ans. (b)
The net primary productivity of an ecosystem is
(a) Total weight of green plants – respiratory losses
(b) Total weight of green plants + respiratory losses
(c) Respiratory losses alone
Ans. (a)
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The primary producer of an ecosystem is
(a) Herbivores
(b) Carnivores
(c) Both Herbivores and Carnivores
(d) Green plants
Ans. (d)
The pyramid of energy in a forest ecosystem is
(a) Always upright
(b) Always inverted
(c) Both upright and inverted
Ans. (a)
Which of the following ecosystems has the highest gross primary productivity?
(a) Grassland
(b) Coral reef
(c) Mangroves
(d) Rainforest
Ans. (b)
Which of the following abundantly occurs in a pond ecosystem?
(a) Producer
(b) Consumer
(c) Top consumer
(d) Decomposers
Ans. (a)
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The largestecosystems in the world are
(a) Grasslands
(b) Great lakes
(c) Oceans
(d) Forests
Ans. (c)
In a tree ecosystem, the pyramid of numbers is
(a) Upright
(b) Inverted
(c) Both of the above
(d) None of the above
Ans. (c)
The drivingforce of an ecosystem is
(a) Producer
(b) Carbohydrates in plants
(c) Biomass
(d) Solar energy
Ans. (d)
An ecosystem is a complex interacting system of
(a) Individual
(b) Population
(c) Communities and their physical environment
(d) Communities and their soil conditions
Ans. (c)
Which of the biomes is called the “Bread Basket” of the world?
(a) Mid-latitude grasslands
(b) Taiga
(c) Mediterranean
(d) Tropical Savannah
Ans. (a)
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Mangrove forests occur in
(a) high mountains
(b) snowy plains
(c) coastal swamps
(d) interior plateaus
Ans. (c)
Among the animal groups given below, which one appears to be more vulnerable to extinction?
(a) Insects
(b) Mammals
(c) Amphibians
(d) Reptiles
Ans. (c)
Which of the following biotic communities would have trees?
(a) Tundra
(b) Taiga
(c) Shrubland
(d) Intertidal zone
Ans. (b)
Taiga is a forest of
(a) herbal trees
(b) softwood trees
(c) mixed trees
(d) alpine trees
Ans. (d)
Sandal Wood trees are mostly found in _
(a) Tropical Evergreen Forests
(b) Tropical most Decidous
(c) Alpine forests
(d) Tropical Thorn Forests
Ans. (d)
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Energy _____ in the Ecosystem.
(a) is released
(b) is absorbed
(c) flows
Ans. (c)
Llanos are the grasslands of
(a) Guyana Highlands
(b) Brazilian Highlands
(c) Argentina
(d) Chile
Ans. (d)
The set of ecosystems is called a __
(a) Biome
(b) Climate
(c) Subsystem
(d) Structure
Ans. (a)
The Temperate grasslands of North America are known as:
(a) Pampas
(b) Downs
(c) Stepp
(d) Prairies
Ans. (d)
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The locality where an organism lives is __
(a) Niche
(b) habitat
(c) environment
Answer. (b)
How do mangroves function as a safety hedge?
(a) The mangrove swamps separate the human settlements from the sea by a wide zone where people neither live nor venture out.
(b) The mangroves provide food and medicine that people need after any natural disaster.
(c) The tall mangrove trees with dense canopies serve as excellent shelter during a cyclone or tsunami.
(d) The mangrove trees do not get uprooted by storms and tides because of their extensive roots
Ans. (a)
An ecosystem gradually merges with an adjoining one through a transitional zone called the __
(a) ecological niche
(b) ecological footprint
(c) ecotone
Answer. (c)
The study of interaction between living organisms and their environment is called __
(a) ethnology
(b) ethology
(c) ecology
(d) entomology
Answer. (c)
