MSBTE
22447 Environmental Studies MCQ with Answers
Unit
no. 3
1. Which one of the following
is not a gaseous biogeochemical cycle in an ecosystem?
a) Carbon
cycle
b) Phosphorous
cycle
c) Sulphur
cycle
d) Nitrogen
cycle
Ans:
b
2. Transfer of energy from source
of plants through a series of organism is known as ________________
a) Food
web
b) Energy
cycle
c) Food
chain
d) Biological
system
Ans: c
3. The type of ecosystem with
the highest mean plant productivity is _______________
a) Tundra
b) Temperate
grassland
c) Desert
d) Tropical
rain forest
Ans: d
4. In ecosystem standing crop
refers to________________
a) All the
green plants
b) All the
non living materials
c) All
living and dead animals
d) All the
living materials both animals and plants
Ans: d
5. An ecosystem which can be easily
damaged but can be recovered after some time if damaging effect stops will be
having ____________________
a) High
stability and high resilience
b) High
stability and low resilience
c) Low
stability and low resilience
d) Low
stability and high resilience
Ans: d
6. Which ecosystem produce the
highest annual net primary productivity?
a) Tropical
evergreen forest
a) b)Tropical
rain forest
b) Tropical
deciduous forest
c) Temperate
evergreen forest
Ans: b
7. ____________is the term
used to describe the variety of life found on Earth and all of the natural
processes.
a) Biodiversity
b) Ecosystem
c) Biosphere
d) Ecology
Ans: a
8. Which of the following is
not the value of biodiversity?
a) Social
use
b) Aesthetical
use
c) Environmental
use
d) Moral
Ans: c
9. The biodiversity contained
in the ecosystem provides forest dwellers with all their daily needs
is______use value.
a) Ethical
and Moral
b) Consumptive
c) Aesthetical
d) Social
Ans: b
10. The initiative of
biodiversity assessment focuses on which ecosystem types:
a) Forest
b) wetland
c) Marine
d) All of
the above
Ans: d
11. Which of the following is
not a Causes of biodiversity losses?
a) Over
exploitation
b) Eco-friendly
c) Co-extinction
d) Habitat
loss and fragmentation
Ans: b
12. marketable products such
as animal skins, ivory, medicinal plants, honey, etc comes under_______.
a) Productive
value
b) Consumptive
value
c) Aesthetic
value
d) Social
value
Ans: a
13. _______called the ‘lungs
of the planet’.
a) Sahyadri
rain forest
b) Kankan
rain forest
c) Amazon
rain forest
d) South
Africa rain forest
Ans: c
14. Which leads to over-
exploitation of natural resources?
a) Greed
b) Eco-friendly
c) Need
d) All of
the above
Ans: a
15. Which of the following is
not an Important hot spots in India?
a) Himalayan
b) Western
ghat
c) Indo-Berma
d) Central
ghat
Ans: d
16. What flows through the
ecosystem while matter cycles within them?
a) Energy
b) Force
c) Pressure
d) wind
Ans: a
17. The process in which green
plants and few organisms use sunlight to synthesize nutrients is
known__________
a) Chemosynthesis
b) Photosynthesis
c) Food
chain
d) Food
web
Ans: b
18. Which type of ecosystem
accounts for most of the net primary productivity on earth even though it has a
low average net primary productivity?
a) Tropical
rain forest
b) desert
c) Tropical
evergreen forest
d) Ocean
Ans: d
19. What makes plant
producers?
a) Plants
produce their own food
b) Plants
depend on other organisms for food
c) Plants
are decomposers
d) Plants
do not require any energy
Ans: a
20. Into how many areas the energy
that is received by organisms during energy transfer is converted?
a) One
b) Two
c) Three
d) Four
Ans: c
21. The area to which a
species is biologically adapted to live is known
as--------------
a) Niche
b) Habitat
c) Succession
d) All of
the above
Ans: b
22. A set of organisms that
resemble one another in appearance and
behaviour is called a
--------------
a) Exons
b) Prions
c) Species
d) None of
the above
Ans: c
23. Habitat of Dog Fish is
a) River
b) Pond
c) Lake
d) Sea
Ans: d
24. The destruction of habitat
of plants and animals is called
a) endemism
b) endangered
species
c) habitant
loss
d) flood
Ans: c
25. Each organism in an
ecosystem is at a specific feeding stage called as
the ----
a) Climax
level
b) Producer
level
c) Trophic
level
d) Consumptive
level
Ans: c
26. Zoos are examples for
a) insitu
conservation
b) in vivo
conservation
c) exsitu
conservation
d) exvivo
conservation
Ans: c
27. Study of
inter-relationship between organisms and their environment
is
a) Ecology
b) Ecosystem
c) Phytogeography
d) Ethology
Ans: a
28. How is the atmosphere,
hydrosphere and lithosphere connected ?
a) Hydrological
cycle
b) Nitrogen
cycle
c) Oxygen
cycle
d) Carbon
cycle
Ans: d
29. An ecosystem consist of
a) Green
plants and animals
b) Green
plants and decomposers
c) Producers
and consumers
d) Green
plants, animals, decomposers and abiotic environment
Ans: d
30. An ecosystem gradually
merges with an adjoining one through a Transitional zone called the ---------
a) ecological
niche
b) ecological
footprint
c) ecotone
d) Biodiversity
loss
Ans: c
31. Driving force in an
ecosystem is
a) Plants
b) Producers
c) Solar
energy
d) Biomass
energy
Ans: c
32. Which of the following is
a possible producer in an ecosystem?
a) Plants
b) Animals
c) Human
d) Fish
Ans: a
33. A trophic level refers to:
a) Area in
the tropics
b) An
organism’s portion in a food chain
c) An
organism’s position in an ecosystem
d) An
organism’s position in a biome
Ans: c
34. Levels of biodiversity
include all but one:
a) Genetics
b) Species
c) Population
d) Ecosystem
Ans: c
35. Which ecological pyramid
is always upright?
a) Pyramid
of number
b) Pyramid
of biomass
c) Pyramid
of energy
d) Pyramid
of number and biomass
Ans: c
36. The type of diversity
including all the different kinds of living things found in a certain habitat
is called as:
a) Species
diversity
b) Genetic
diversity
c) Ecosystem
diversity
d) Population
diversity
Ans: a
37. Conservation of
biodiversity outside the natural habitat is called as:
a) Ex-situ
b) In-situ
c) Conservation
d) In-vivo
Ans: a
38. An ecosystem may not
undergo changes because:
a) It is
in a state of homeostasis
b) It has
plants and animals both
c) It gets
solar energy continuously
d) The
decomposers are present in it
Ans: a
39. The primary producers in a
forest ecosystem are:
a) Chlorophyll
containing trees and plants
b) Herbivores
c) Carnivores
d) Bacteria
and other micro-organism
Ans: a
40. Energy flow in an
ecosystem is always:
a) Unidirectional
b) Cyclic
c) Reversible
d) Multi-directional
Ans: a
22447 Environmental Studies MCQ with Answers Unit no.1
22447 Environmental Studies MCQ with Answers Unit no.2
22447 Environmental Studies MCQ with Answers Unit no.3
22447 Environmental Studies MCQ with Answers Unit no.4
22447 Environmental Studies MCQ with Answers Unit no.5
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