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Bio Diversity Different Ecosystems mcq for Students
Bio-luminescence in animals is typically observed in which oceanic zone?
a. euphoric zone
b. bathyal zone
c. abyssal zone
d. both euphoric and bathyal zones
Option c – abyssal zone
Which of the following is not categorized as a photic zone?
a. littoral zone
b. limnetic zone
c. profundal zone
d. limnetic and profundal zones
Option c – profundal zone
Daphnia and Cyclops are commonly found in the
a. littoral zone
b. limnetic zone
c. profundal zone
d. littoral and limnetic zones
Option b – limnetic zone
Crustaceans like crabs are generally associated with
a. littoral zone
b. limnetic zone
c. profundal zone
d. littoral and limnetic zones
Option c – profundal zone
Aestivation refers to
a. summer dormancy
b. winter dormancy
c. spring dormancy
d. rainy season dormancy
Option a – summer dormancy
Charles Darwin’s finch studies showed that
a. all species had the same behavior
b. body shapes varied but behavior remained the same
c. they were unaffected by the Environment
d. vegetation influenced their adaptations
Option d – vegetation influenced their adaptations
What initiates every Food chain?
a. herbivores
b. carnivores
c. producers
d. none of the above
Option c – producers
Plants do not compete for which of the following?
a. water
b. Food
c. space
d. all of these
Option b – Food
The phrase “ban all pesticides” implies
a. restrict pesticide use
b. completely eliminate pesticides
c. encourage eco-friendly farming
d. shut down pesticide manufacturers
Option c – encourage eco-friendly farming
According to Charles Elton, what is true about the ecological pyramid?
a. carnivores occupy the top level
b. energy is highest at the top
c. there are no producers at the top
d. carnivores are at the top and no producers at the top
Option a – carnivores occupy the top level
The first level in a Food pyramid consists of
a. primary consumers
b. secondary consumers
c. producers
d. tertiary consumers
Option c – producers
The ecological pyramid concept was first introduced by
a. Charles Elton
b. Lindeman
c. Slobodkin
d. Steele
Option a – Charles Elton
What factor is crucial in determining terrestrial ecosystems?
a. rainfall
b. sunlight
c. temperature
d. all of these
Option a – rainfall
What percentage of biomass typically moves from one trophic level to the next?
a. 100%
b. 80–90%
c. 10–20%
d. 40–50%
Option c – 10–20%
The global area inhabited by Living Organisms is known as
a. biosphere
b. lithosphere
c. hydrosphere
d. none of these
Option a – biosphere
Bioaccumulation refers to the entry of …….. into a Food chain.
a. a new predator
b. extra producers
c. pollutants
d. all of the above
Option c – pollutants
The main energy source for ecosystems is
b. Solar radiation
c. mechanical power
d. biological energy
Option b – Solar radiation
The relationship describing the Mass of Organisms at different trophic levels is
a. bioaccumulation
b. energy pyramid
c. biomass
d. pyramid of numbers
Option c – biomass
In a grassland ecosystem, a secondary consumer is
a. grasshopper
b. grass
c. snake
d. eagle
Option a – grasshopper
Who is the final consumer in this Food chain: green plants → deer → ?
a. elephant
b. wolf
c. rat
d. none
Option b – wolf
What is the fundamental unit in Ecology?
a. habitat
b. ecosystem
c. biosphere
d. Food web
Option b – ecosystem
Decomposers are also called
a. producers
b. consumers
c. recyclers
d. decayers
Option c – recyclers
Which of the following is a man-made ecosystem?
a. Forest
b. river
c. crop field
d. pond
Option c – crop field
Currently, deserts occupy approximately what portion of Earth’s land?
a. 15%
b. 18%
c. 20%
d. 17%
Option d – 17%
The Animal often called the “ship of the desert” is the
a. fox
b. camel
c. elephant
d. dog
Option b – camel
The term “ecosystem” was first introduced in
a. 1926
b. 1930
c. 1935
d. 1939
Option c – 1935
Which is the largest ecosystem on Earth?
a. land
b. sea
c. biosphere
d. habitat
Option c – biosphere
Who are known as producers in an ecosystem?
a. plants
b. animals
c. birds
d. none of the above
Option a – plants
Ecology mainly studies changes in
a. habitat
b. plant species
c. Animal species
d. non-living components
Option a – habitat
Xerophytes refer to
a. marine plants
b. swamp plants
c. moderate Environment plants
d. desert plants
Option d – desert plants
“Living stones” refers to
a. marine Animal shells
b. colorful stones in rivers
c. fungi species
d. plants with pebble-shaped leaves
Option d – plants with pebble-shaped leaves
What is true about the kangaroo rat?
a. survives without drinking water
b. creates tiny water pools
c. extracts water from sand
d. cannot live without water
Option a – survives without drinking water
Which one is not nocturnal?
a. CAT
b. rat
c. bat
d. parrot
Option d – parrot
In the ocean, pressure increases by 1 Atmosphere for every
a. 1 meter
b. 10 meters
c. 100 meters
d. 1000 meters
Option b – 10 meters
The twilight zone of the ocean is found in the
a. euphoric zone
b. bathyal zone
c. abyssal zone
d. euphoric and bathyal zones
Option b – bathyal zone
Flying fish are primarily found in the
a. euphoric zone
b. bathyal zone
c. abyssal zone
d. bathyal and abyssal zones
Option a – euphoric zone
Most ecosystems in the ocean are located in the
a. euphoric zone
b. bathyal zone
c. abyssal zone
d. bathyal and abyssal zones
Option a – euphoric zone
Organisms with tube-like bodies and whales are commonly seen in the
a. euphoric zone
b. bathyal zone
c. abyssal zone
d. none of these
Option b – bathyal zone
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