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Quiz on Biodiversity || 30 Important Multiple Choice Questions and Answers|| At 3 Levels
Sep 7, 2025
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✅ Interactive Biology Quiz
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0:00
Hi friends, in this biodiversity quiz
0:02
you have 30 questions at three levels.
0:04
First 10 questions basic level, next 10
0:07
intermediate level and the final 10
0:09
questions advanced level that will be
0:12
helpful for all competitive exams in
0:14
biological science. Question number one,
0:17
what is biodiversity? Options are it is
0:20
a study of diversity of animals on the
0:22
planet. Option B, the number of
0:23
different types of populations in a
0:25
region. Option C, the variety of
0:27
species, genes, and ecosystems on Earth.
0:30
Option D, the number of different types
0:31
of species in a region. You have 10
0:34
seconds to answer this question.
0:43
The correct answer is it is a variety of
0:46
species, genes, and ecosystems on Earth.
0:49
Question number two, which of the
0:51
following is an example of a threatened
0:53
species? Option A, an animal that is
0:56
extinct. Option B, an animal whose
0:58
population is declining and is at the
1:00
risk of extinction. Option C, a plant
1:02
that grows quickly and is found
1:04
everywhere. Option D, an animal whose
1:06
population is declining drastically.
1:16
The correct answer is a threatened
1:18
species is an animal whose population is
1:21
declining and is at the risk of
1:23
extinction. Question number three, the
1:25
loss of biodiversity means option A
1:28
habitat destruction. Option B
1:29
extinction, option C, loss of genetic
1:31
variation. Option D, all of these.
1:40
The correct answer is all of these.
1:42
Question number four, what is a hot spot
1:45
of biodiversity? Option A, a place with
1:48
very high temperatures. Option B, an
1:50
area with a large number of endemic
1:51
species that are under threat. Option C,
1:54
a popular tourist destination with rich
1:56
biodiversity. Option D, a very high
1:59
temperature region with many endemic
2:01
species under threat.
2:10
The correct answer is hotspot is an area
2:13
with a large number of endemic species
2:15
that are under threat. Question number
2:18
five, what is the main cause of
2:20
biodiversity loss today? Option A,
2:22
natural disasters like earthquakes and
2:24
floods. Option B, habitat destruction
2:27
and fragmentation. Option C, pollution
2:29
and industrialization. Option D, climate
2:32
change.
2:40
The correct answer is habitat
2:42
destruction and fragmentation.
2:46
Question number six, what does endemic
2:48
species mean? Option A, species that can
2:51
live in many different environments.
2:53
Option B, a species often present at the
2:55
core zone of an ecosystem. Option C, a
2:58
species that is very rare worldwide.
3:00
Option B, a species that is only found
3:03
in one specific geographic area.
3:13
The answer is endemic species is a
3:15
species that is only found in one
3:18
specific geographic area. Panda is
3:20
endemic to China. Kangaroo is endemic to
3:23
Australia.
3:25
Question number seven. Which type of
3:27
diversity refers to the variety of genes
3:30
within a species? Option A, species
3:32
diversity. Option B ecosystem diversity.
3:35
Option C genetic diversity. Option D
3:37
generic diversity.
3:46
Correct answer is genetic diversity.
3:49
Question number eight. Why is
3:51
biodiversity important for ecosystems?
3:54
Option A. It makes ecosystems stable but
3:57
weak. Option B, makes ecosystem stable
4:00
and resilient. Option C, it has no
4:02
effect on ecosystem health. Option D, it
4:04
only benefits a few select species.
4:15
The correct answer is it makes
4:17
ecosystems stable and resilient.
4:20
Question number nine, what is a keystone
4:22
species? Option A, species that is
4:24
important to an ecosystem. Option B, a
4:27
species whose removal has a
4:29
disproportionately large effect on its
4:31
ecosystem. Option C, a species that is a
4:34
predator at the top of the food chain.
4:36
Option D, a plant species that is a
4:38
primary producer.
4:48
The answer is a species whose removal
4:50
has a dis disproportionately large
4:52
effect on its ecosystem. Keystone
4:54
species include tiger, elephant in
4:57
grasslands, etc. Question number 10,
5:00
what is conservation biology? Option A,
5:02
the scientific study of climate change
5:04
and its impact on biodiversity
5:06
conservation. Option B, the scientific
5:08
study of conservation of natural
5:10
resources. Option C, the scientific
5:12
study of the nature and status of its
5:14
biodiversity within the aim of
5:17
protecting it. Option D, the study of
5:19
all ecosystems.
5:27
The correct answer is conservation
5:29
biology is a scientific study of the
5:31
nature and status of Earth's
5:33
biodiversity with an aim of protecting
5:36
it. Question number 11. The sixth mass
5:39
extinction is primarily driven by which
5:41
factor? Option A, asteroid impact and
5:44
pollution. Option B, climate change and
5:46
invasive species. Option C, human
5:48
activities. Option D, natural geological
5:51
processes.
5:59
The answer is human activities. Question
6:02
number 12. What is the difference
6:04
between XC2 and INC2 conservation?
6:06
Option A. Exit conservation is for
6:08
plants, institute for animals. Option B,
6:10
exit conserves species in their natural
6:12
habitat while INC2 conserves them
6:15
outside their natural habitat. Option C,
6:17
INC2 conserves species in their natural
6:20
habitat while exit conserves them
6:21
outside their natural habitat. Option D,
6:24
exit is for marine species whereas initu
6:26
is for terrestrial species.
6:36
The correct answer is institute
6:38
conservation
6:40
of species is within their natural
6:42
habitat that means inside the natural
6:44
habitat whereas exit it is external or
6:48
conserves them outside the natural
6:50
habitat. Question number 13. The concept
6:53
of ecosystem surfaces means option A the
6:56
jobs created by the tourism and
6:57
ecosystem based industries. Option B,
7:00
the direct financial value of natural
7:02
resources. Option C, the benefits that
7:04
humans receive from ecosystems. Option
7:07
D, the legal framework for environmental
7:09
production.
7:17
The correct answer is ecosystem services
7:20
means the benefits that humans receive
7:22
from ecosystems. Question number 14. A
7:25
biome is best described as option A. a
7:28
specific local habitat with rich
7:30
biodiversity. Option B, group of
7:32
organisms interacting with each other
7:33
and with their environment. Option C, a
7:36
large geographic region of plants and
7:38
animals characterized by the dominant
7:40
plant type. Option D, a large geographic
7:42
region of plants and animals
7:44
characterized by the dominant predator
7:46
animal.
7:55
The correct answer is a large geographic
7:57
region of plants and animals
7:59
characterized by the dominant plant
8:01
type. Question number 15. What is a term
8:04
for a species introduced to a new
8:06
environment that causes harm to the
8:07
native species and ecosystem? Option A,
8:10
endomic species. Option B, founder
8:12
species. Option C, pioneer species.
8:14
Option D, invasive species.
8:25
The correct answer is invasive species.
8:27
Question number 16. Which of the
8:29
following is a primary threat to the
8:31
coral reef destruction? Option A,
8:33
pollution and microplastic pollution.
8:35
Option B, climate change and ocean
8:37
acidification. Option C, coastal
8:39
development. Option D, alkali blooms.
8:49
The correct answer is ocean
8:51
acidification caused by increased carbon
8:53
dioxide absorption and climate change.
8:57
Question number 17. A trophic cascade is
9:00
a phenomenon where option A, nutrients
9:02
flow from the soil to the plants. Option
9:04
B, the removal of top predator causes
9:06
change in the population of other
9:07
species at different trophic levels.
9:10
Option C, different species share the
9:12
same food resource. Option D, a species
9:14
adapts to a new climate.
9:24
The correct answer is the removal of a
9:25
top predator causes changes in the
9:27
population of other species at different
9:29
trophic levels. Question number 18, what
9:32
is the edge effect in biodiversity?
9:35
Option A, the gradual change in species
9:37
composition as you move from the core of
9:39
the habitat to its edge. Option B, the
9:42
increase in species diversity at the
9:44
center of the habitat. Option C, the
9:46
complete loss of biodiversity at the
9:48
edge of a habitat. Option D, the
9:50
protective barrier created by a
9:53
habitat's edge.
9:59
The correct answer is the gradual change
10:01
in species composition as you move from
10:03
the core of a habitat to its edge.
10:06
Question number 19. The Millennium
10:08
Ecosystem Assessment, MEA, categorized
10:10
ecosystem services into which four main
10:13
types. Option A, provisioning,
10:15
supporting, regulating, and cultural.
10:17
Option B, economic, social,
10:19
environmental, and political. Option C,
10:21
aesthetic, recreational, educational and
10:23
spiritual. Option B, food, water, air
10:26
and shelter.
10:32
The correct answer is provisioning,
10:34
supporting, regulating and cultural.
10:37
Question number 20. What is a
10:39
biodiversity index like the Shannon
10:41
winner index? Option A, measure of total
10:44
number of individuals in an ecosystem.
10:46
Option B, a single number that
10:47
represents the diversity of species in a
10:49
community taking into account both
10:51
species richness and evenness. Option C,
10:53
a way to calculate the age of a habitat.
10:56
Option D, a list of all species found in
10:59
a particular area.
11:07
The correct answer is a single number
11:08
that represents the diversity of species
11:10
in a community taking into account both
11:13
species richness and evenness. Question
11:15
number 21. The concept of a biodiversity
11:17
offset is designed to achieve what?
11:20
Option A, to create new habitats without
11:23
any environmental impact. Option B to
11:25
compensate for unavoidable biodiversity
11:28
loss by achieving measurable
11:30
conservation outcomes elsewhere. Option
11:32
C to prevent all human development if it
11:35
disturbs ecosystem. Option D to find
11:38
companies that damage the environment.
11:50
The correct answer is biodiversity
11:52
offset is to compensate for unavoidable
11:55
biodiversity loss by achieving
11:57
measurable conservation outcomes
11:59
elsewhere? Question number 22. Which
12:02
principle states that the genetic
12:04
diversity of a species is higher near
12:06
the equator and decreases towards the
12:09
ports? Option A, the latitudinal
12:11
biodiversity gradient. Option B, the
12:13
island biogeography theory. Option C,
12:15
the longitudinal biodiversity gradient.
12:17
Option D, the principle of competitive
12:20
exclusion.
12:26
The correct answer is the latitudinal
12:29
biodiversity gradient. Question number
12:31
23. The Ali effect is a phenomenon where
12:34
option A, a species growth rate
12:36
increases with a decrease in population
12:38
density. Option B, individuals of a
12:40
species cooperate at low population
12:42
densities leading to a positive
12:44
correlation between population size and
12:46
growth rate. Option C, competition
12:48
between species leads to exclusion of
12:51
one. Option D, population growth is
12:53
limited by a single resource.
13:02
The correct answer is individuals of a
13:04
species cooperate at low population
13:06
densities leading to a positive
13:08
correlation between population size and
13:10
growth rate. Question number 24, what is
13:13
biorrosspecting? Option A, the illegal
13:15
harvesting of endangered species. Option
13:18
B, the exploration of natural resources
13:20
for commercially valuable compounds,
13:22
genes or products. Option C, the legal
13:24
harvesting of endangered species for
13:26
commercial use. Option D, the process of
13:29
reintroducing a species into the Y.
13:39
The correct answer is the exploration of
13:42
natural resources for commercially
13:44
valuable compounds, genes, and products.
13:47
Question number 25. An independent
13:49
intergovernmental body established in
13:52
2012 to provide policy makers with
13:54
objective evidence-based scientific
13:56
assessments on the global and regional
13:59
biodiversity ecosystems and their vital
14:01
services to people is option A MAB,
14:05
option B IPCC, option C UNCC, option D
14:09
IPES.
14:18
The correct answer is IPBES,
14:20
Intergovernmental Science Policy
14:22
Platform on Biodiversity and Ecosystem
14:25
Services. Question number 26, what is
14:28
cryptic speciation? Option A, the
14:30
process of a species going extinct
14:32
without being discovered. Option B, the
14:34
existence of two or more species that
14:35
are morphologically identical but
14:37
reproductively isolated and genetically
14:39
distinct. Option C, the formation of a
14:42
new species through hybridization.
14:43
Option sudden appearance of a new
14:45
species in the fossil record.
14:53
The correct answer is cryptic species is
14:55
the existence of two or more species
14:57
that are morphologically identical but
14:59
reproductively isolated and genetically
15:02
distinct. Question number 27. The
15:04
concept of niche partitioning helps to
15:06
explain how species can live in same
15:09
area without direct competition. Option
15:11
B. A single species can occupy multiple
15:13
habitats. Option C, a keystone species
15:16
controls an ecosystem. Option D, an
15:19
invasive species out competes a native
15:22
one.
15:27
The correct answer is species can live
15:30
in the same area without direct
15:32
competition. Question number 28. What is
15:35
the primary focus of the CBD or
15:38
convention on biological diversity?
15:41
Option A to establish global parks and
15:43
wildlife sanctuaries for biodiversity
15:45
protection. Option B, the conservation
15:47
of biological diversity, the sustainable
15:49
use of its components and the fair and
15:51
equitable sharing of benefits arising
15:52
from genetic resources. Option C, the
15:55
conservation of endangered species and
15:57
its international trade regulations.
15:59
Option D to conserve fund scientific
16:01
research on new species and conservation
16:04
of endangered species.
16:14
The answer is the conservation of
16:15
biological diversity, the sustainable
16:17
use of its components and the fair and
16:19
equitable sharing of benefits arising
16:21
from genetic resources. Question number
16:24
29. The insurance hypothesis of
16:26
biodiversity suggests that option A that
16:29
ecosystem with higher biodiversity are
16:31
more resilient and stable against
16:33
environmental changes. Option B that
16:35
ensuring species against extinction is a
16:37
cost effective conservation strategy.
16:39
Option C that biodiversity is directly
16:41
proportional to economic growth. Option
16:43
D that species diversity is a random
16:45
occurrence stabilized by environment.
16:56
The correct answer is insurance
16:58
hypothesis states that ecosystem with
17:00
higher biodiversity are more resilient
17:02
and stable against environmental
17:04
changes. And the final question, what is
17:06
meta population dynamics? Option A, the
17:09
study of population growth in a single
17:10
isolated habitat. Option B, the study of
17:13
how a group of specially separated
17:15
populations of the same species interact
17:17
with individuals moving among them.
17:20
Option C, the study of relationship
17:21
between a predator and its prey
17:23
population. Option D, the study of how
17:25
different populations of the same
17:27
species interact within an ecosystem.
17:38
The answer is metapopul dynamics is a
17:41
study of how a group of spatially
17:43
disperated populations of the same
17:44
species interact with individuals moving
17:46
among them.
17:48
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