BT101 Midterm Grand Quiz 170 MCQs
- Type
- Midterm past paper
- Course
- BT101 Ecology, Biodiversity & Evolution-I
- Size
- PDF 439 KB
- Updated
- 23 Oct 2026
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- The rate that new organic matter is made by means of individual
growth and reproduction in all the herbivores is -------------------------
Secondary
productivity
- The Liberat chemical-bond energy for metabolic use in glycolysis,
Krebs’s cycle and electron transport chain
Heterotrophs
- Which of these Introduced to Hawaii in the late 1800’s.
Asian Tiger Mosquito
- There is No limit to number of ------- in Mullerian mimicry
species participating
- Negative Phototactic movement occurs in ----------
Earthworms
- oscillations are produced by interactions between populations of at
least ----different species
two
- Mutualistic gut flora e.g. cellulose digesting ------
bacteria
- Removal of apex predator in environment called --------
Cascade Effect
- analogous structures are the product of ---------
Convergent Evolution
- Use of DDT was Banned in US in ------
- According to ------- concept ‘Fossils resemble but are not exactly the
same as modern species
Theory of
- At either limit, one or more essential functions cease
Tolerance range
- They Synthesis of the organic compounds of their bodies from
inorganic precursors
Autotrophs
- It Occurs when uptake from the water is greater than excretion
Bioconcentration
- Prokaryotic microbes can synthesize ------and nitrate from N2 in the
ammonia
- Arctic fox changes from brown or grey in the ------ to white in the
winter
summer
- the water that goes into the atmosphere is ------- than it was on
Earth.
cleaner
- Pathogens is the source of --------------- pollutions.
- Temperature of the troposphere ------- with altitude.
decreases
- ------ is an early freshwater reptile found as fossils from the early
Permian period.
Mesosaurus
- Mutualism Long-term relationship between individuals of ----- species different
- There is limited number of feeding or trophic levels in -----
- Which off the following pyramids is formed only in aquatic
ecosystem.
Pyramid of inverted
biomass
- ---- is loss of feature due to loss of its value in changed environment
Vestigiality
- They Release digestive enzymes by their hyphae
Fungi
- Ecologists support ------ concept of communities.
individualistic
- Distribution and concentration of variable varies in --------
space and time
- troposphere contains ----- of the atmosphere's mass
75%
- Koalas are the example of ------
Folivores
- Insects, frog, turtle undergo -----
Aestivation
- One of the major disruptions is loss of habitat.
Extinction
- Layers of atmosphere increases with ------- in some regions
altitude
- Variability in Net Primary Productivity Wetlands and tropical rain
2000 g/m2/ year
- Mercury bioaccumulates in the ------ of top predators of the open
ocean
muscles
- Different colors of Mullerian mimicry depend on ------ and visibility
location
- Volcanic eruptions release ------ into the atmosphere
sulfur
- Which of the following is not the characteristic of Eutrophic lake
Good light
penetration
- Atmosphere is ------ nitrogen by volume
78%
- ------- are strongly affected by light pollution.
- Who was proposed the law of use and disuse
LAMARCK
- Land fill is the example of --------
Point source
pollution
- ------ enables animals to survive periods of reduced food availability.
Torpor
- Adult human body contains ----- of water by weight.
60%
- ------- was Father of geology and stratigraphy
Nicolas Steno
- In nitrogen cycle Immobilization is the opposite of -------
mineralization
- Cascade Effect leads to increase in their --------species.
prey
- Flies and ------- have outlandish proboscises
moths
- Food chain only follows a direct, ------- pathway of one animal at a
time.
linear
- Which of the following has low algal growth
Oligotrophic lake
- a specific functional role and place of an organism called its -------
niche
- In mesosphere Lower boundary is -------- to 65 kilometres
- The atmosphere provides Protective shield against radiation and -----
cosmic rays
- Thermosphere Known as ------
ionosphere
- It Represent tiny portion of the complexity of real ecosystems
Food Web
- Each -------- trophic level has its own secondary productivity
heterotroph
- In interspecific counter-illumination eliminate -------
light
- In crypsis Animals habitually press their bodies to the -----
ground
- ------- competition, occurs between two species to use the same
resources
Interspecific
- The process of -------- through plant leaves is called transpiration
- ----is the amount of chemical energy as biomass that primary
producers create in a given length of time.
Gross primary
production (GPP)
- Hibernation occur which of the following animals
Rodents
- There are ------ types of herbivory depending upon different feeding
habits.
eight
- They obtain energy by means of inorganic oxidation reactions
Chemoautotrophs
- Existence of shared ancestry between a pair of structures, or genes,
in different taxa occur in
Divergent evolution
- Mimicry resemblance of one ------ to another for protective or
aggressive purposes
species
- Which of the following factor are the major reason of invasion of
species
Human activities
- Motion dazzling is protection without ------
hiding
- Bacteria are use to remove organic matter dissolved in water
(ODW)in the ------- process of conventional sewage treatment
Secondary
- Species Invest more heavily in fewer offspring
- In water cycle Rate of synthesis and breakdown is-------.
equal
- Mesosphere called as “-------”.
near space
- Animals use --------- to make organic molecules
chemical bond
energy
- Which Microparasites: reproduce inside host
Bacteria
- Asian Tiger Mosquito Can be a vector for a virus for --------- disease.
West Nile
- Polar aurora is observed due to entry of solar-----.
winds
- ------- is key element in survival of life.
- Weismann made the important distinction between -------cells and ----
-cells.
Germ, somatic
Q78. Which of the following species is hunted for its fur?
Passenger pigeon
- The process of carbon cycle is sometimes called -------
carbon fixation
- Intraspecific interaction Follows logistic ------- growth curve
population
- Friction with atmospheric gases ------them long before they reach the
ground.in atmosphere
destroys
- ------- bacteria perform Denitrification
Facultative anaerobic
- In Third Atmosphere Inflow and outflow of CO2 from ------ continental
carbonate stores
large
- A ----- rapidly changes its color.
Chameloen
- There are Lower mortality in adults in survivorship curve
Type iii
- is the slowest cycle
Phosphorus cycle
- Lagoons Stabilization Ponds are ------ feet deep
3-5’
- swallows and pink fairy armadillos are ----
Insectivores
- --------of global fresh water use in agriculture
69% to 90%
- ------ near the surface, however, harmful to life
Ozone
- Batesian Mimicry Mimics usually ----- than models
smaller
- Appearance of an animal that warns predators it is toxic, distasteful
or dangerous.
Aposematism
- In Mutualism both individuals get ------
benefit
Q94. Which is not the effect of fragmentation?
Genetic drift is
decreased.
- ------ are sensitive to UV, indirectly affecting crops
Cyanobacteria
- ------ of human body is carbon by weight.
20%
- In large forests, an enormous amount of water will ------ through
leaves.
transpire
- Evidences of evolution are based upon following EXCEPT
Immunology
- k-selected species are Typically are ----- competitors in such
crowded habitats.
strong
100 Oxygen was produced ---- billion year ago.
2.5
101 Troposphere make 99% of the total ------ of water vapor and aerosols mass
102 12 to 50 km layer of atmosphere is ----
103 ------ Simplified abstractions of real food webs, but complex in their
dynamics
104 It has a half life of 15 year
Dichlorodi
phenyltrichloroethane
105 ----- are worst affected due to their edges.
Plants
106 Sometimes species cannot utilize their ----- niche.
entire
107 Humans are ----- species
108 Tropical deforestation is responsible for approximately ------ of world
greenhouse gas emissions.
20%
109 It has two phase
Exponential Growth
110 These stage from a foraging cycle-----
111 Camouflage also known as ------
Cryptic coloration
112 Transparency more efficient in
deeper water
113 An ---- species becomes invasive when it becomes established in its new
environment and out competes native species
exotic
114 ---- is produced as result of lightening.
Nitric acid
115 The shape of type II survivorship curve is ----
diagonal
116 Female ----- enters via ostiole and oviposits in female flowers
wasp
117 The ----- located directly above the thermosphere.
exosphere
118 -----density populations may attract predators who wouldn’t bother with a
sparser population.
High
119 ----- is useful tool to distinguish atmospheric layers
Temperature
- 120 . HMS Beagle set sail on December 27, 1831 on a ----- voyage.
5-year
121 Each successional stage is called a -------
seral stage
122 animal wastes, plant residues have -------- BOD
high
123 ------ water holds less DO than cold water
Warm
124 Chemicals that contain carbon atoms are called
Organic Compounds
125 Third Atmosphere Reduces the amount of ------- in the atmosphere
oxygen
126 Zebra Mussel Accidentally introduced to the Great Lakes in ------ 1988.
127 A ------ Feeds on plants such as grasses, soft flowering plants (forbs) and
algae
Grazers
128 Genetic code of ----- is universal.
mRNA
129 Invertebrates predator are such as
jelly fish
130 Ticks and mites are the example of…..
Ectoparasites
131 Removal of the top -------can alter the food web dynamics
predator
132 Which of these Native to the Pacific Ocean
Lionfish
133 They can breakdown Carbohydrate Anaerobically also
bacteria
134 Extinct hippopotamus like animal, now called
Toxodon
135 Disjunct Distribution occur due to following barriers except
Chemical
136 In the process of bacteria. release compounds such as cadaverine and
putrescine causing decaying odor
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