Ecology And General Silviculture MCQs

Option A: Tropical rain forest

Option B: Desert

Option C: Grassland with scattered trees

Option D: Dense forest with close canopy

Correct Answer: Grassland with scattered trees ✔

Option A: Secondary productivity

Option B: Primary productivity

Option C: Gross productivity

Option D: Net productivity

Correct Answer: Secondary productivity ✔

Option A: Rice-field

Option B: Forest

Option C: Grassland

Option D: Lake

Correct Answer: Rice-field ✔

Option A: Herbivores

Option B: Carnivores

Option C: Producers

Option D: Decomposers

Correct Answer: Carnivores ✔

Option A: Energy

Option B: Number

Option C: Biomass

Option D: Both (a) and (c)

Correct Answer: Number ✔

Option A: Elton

Option B: Heackel

Option C: Lindeman

Option D: Schimper

Correct Answer: Lindeman ✔

Option A: Epilimnion

Option B: Metalimnion

Option C: Hypolimnion

Option D: All of the above

Correct Answer: Hypolimnion ✔

Option A: Pollution

Option B: High temperature

Option C: Low temperature

Option D: Radiation

Correct Answer: High temperature ✔

Option A: Algae will get more grow luxuriantly

Option B: Primary consumers will grow

Option C: Food chain will be effected

Option D: No effect will be seen

Correct Answer: Food chain will be effected ✔

Option A: Producer

Option B: Primary consumer

Option C: Secondary consumers

Option D: Decomposers

Correct Answer: Primary consumer ✔

Option A: 4

Option B: 2

Option C: 3

Option D: 1

Correct Answer: 2 ✔

Option A: Lentic biota

Option B: Latic biota

Option C: Abiotic

Option D: None of these

Correct Answer: Lentic biota ✔

Option A: Pond ecosystem

Option B: Lake ecosystem

Option C: Grassland ecosystem

Option D: Forest ecosystem

Correct Answer: Forest ecosystem ✔

Option A: Producers

Option B: Decomposers

Option C: Consumers

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Herbivores

Option B: Carnivores

Option C: Producers

Option D: Decomposers

Correct Answer: Producers ✔

Option A: Lithosphere

Option B: Biosphere

Option C: Atmosphere

Option D: Hydrosphere

Correct Answer: Biosphere ✔

Option A: Mountain

Option B: Desert

Option C: Forest

Option D: Ocean

Correct Answer: Ocean ✔

Option A: Benthic brown algae, coastal red algae and daphnids

Option B: Benthic diatoms and marine viruses

Option C: Sea-grasses and slime-molds

Option D: Free-floating microalgae, cyanobacteria and nanoplankton

Correct Answer: Free-floating microalgae, cyanobacteria and nanoplankton ✔

Option A: Producers only

Option B: Consumers only

Option C: Producers and Consumers only

Option D: Producers, consumers and decomposers

Correct Answer: Producers, consumers and decomposers ✔

Option A: Only plants

Option B: Only animals

Option C: Only carnivores

Option D: Organisms linked in food chains

Correct Answer: Organisms linked in food chains ✔

Option A: Tansley

Option B: Warming

Option C: Carl Mobius

Option D: S.C.Pandya

Correct Answer: Carl Mobius ✔

Option A: Saprophytes

Option B: Primary consumers

Option C: Second trophic level

Option D: None of these

Correct Answer: None of these ✔

Option A: Trophic levels

Option B: Consumer levels

Option C: Producer levels

Option D: Herbivores levels

Correct Answer: Trophic levels ✔

Option A: Producers

Option B: Primary consumers

Option C: Secondary consumers

Option D: Disinfectants

Correct Answer: Producers ✔

Option A: T1

Option B: T2

Option C: T3

Option D: T4

Correct Answer: T1 ✔

Option A: Photosynthesis

Option B: Assimilation of nitrogenous compounds

Option C: Chemosynthesis

Option D: Digestion or breakdown of organic compounds

Correct Answer: Digestion or breakdown of organic compounds ✔

Option A: Flow of energy

Option B: Cycling of material

Option C: Consumption of materials

Option D: Flow of energy and cycling of materials

Correct Answer: Flow of energy ✔

Option A: Producers

Option B: Consumers

Option C: Decomposers

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Only two types of organisms

Option B: Only two types of organisms plus macroscopic animals

Option C: Only microscopic animals

Option D: Only bacteria and fungi

Correct Answer: Only bacteria and fungi ✔

Option A: Food chain

Option B: Food web

Option C: Symbiosis

Option D: Phagocytosis

Correct Answer: Food chain ✔

Option A: Grassland

Option B: Coral reefs

Option C: Mangroves

Option D: Rain forest

Correct Answer: Grassland ✔

Option A: Producers

Option B: Decomposers

Option C: Consumers and decomposers

Option D: Biosphere

Correct Answer: Biosphere ✔

Option A: Straight

Option B: Horizontal

Option C: Inverted

Option D: Indefinite

Correct Answer: Inverted ✔

Option A: Desert

Option B: Ocean

Option C: Mountain

Option D: Forest

Correct Answer: Forest ✔

Option A: Man

Option B: Parasites

Option C: Predators

Option D: Available food

Correct Answer: Available food ✔

Option A: Producers and consumers

Option B: Producers and decomposers

Option C: Producers, consumers and decomposers

Option D: Producers and light

Correct Answer: Producers, consumers and decomposers ✔

Option A: Microconsumers

Option B: Secondary consumers

Option C: Primary consumers

Option D: None of these

Correct Answer: Microconsumers ✔

Option A: Herbivores

Option B: Detrivores

Option C: Carnivores

Option D: Omnivores

Correct Answer: Herbivores ✔

Option A: Net primary productivity

Option B: Gross secondary productivity

Option C: Net secondary productivity

Option D: Gross primary productivity

Correct Answer: Gross primary productivity ✔

Option A: Diurnal

Option B: Arboreal

Option C: Aquatic

Option D: Fossorial

Correct Answer: Fossorial ✔

Option A: Primary carnivore and trophic level II

Option B: Secondary consumers and herbivores

Option C: Primary consumers and herbivores

Option D: Trophic level I and herbivores

Correct Answer: Primary consumers and herbivores ✔

Option A: Fe

Option B: P

Option C: Mg

Option D: Ca

Correct Answer: P ✔

Option A: Oxygen and nitrogen

Option B: Phosphorus and Sulphur

Option C: Phosphorus and CO2

Option D: Phosphorus and nitrogen

Correct Answer: Phosphorus and Sulphur ✔

Option A: 25%

Option B: 50%

Option C: 10%

Option D: 5%

Correct Answer: 10% ✔

Option A: The predator develops a preference to other diets and may itself become a pest

Option B: They do not always survive when transferred to a new environment

Option C: The method is less effective as compared to the use of insecticides

Option D: The practical difficulty in introducing the predator to specific area

Correct Answer: The predator develops a preference to other diets and may itself become a pest ✔

Option A: Place of occurrence

Option B: Competitive ability

Option C: Centre of origin

Option D: Function at its place of occurrence

Correct Answer: Function at its place of occurrence ✔

Option A: 1%

Option B: 2%

Option C: 10%

Option D: 20%

Correct Answer: 10% ✔

Option A: Biological nitrogen fixation

Option B: Electrification of nitrogen

Option C: Industries

Option D: All the above

Correct Answer: All the above ✔

Option A: Herbivores will not receive solar energy

Option B: Rate of decomposition of other component will be very high

Option C: Mineral movement will be blocked

Option D: Energy flow will be blocked

Correct Answer: Mineral movement will be blocked ✔

Option A: Lime rocks contribute to CO2 of water

Option B: Atmospheric CO2 gets dissolved in water

Option C: CO2 is returned by combustion of fuel

Option D: 75% of total carbon lies in geological component

Correct Answer: 75% of total carbon lies in geological component ✔

Option A: FeS and Fe2S3

Option B: Organic sulphates and -SH

Option C: Soluble inorganic sulphates

Option D: All of these

Correct Answer: Soluble inorganic sulphates ✔

Option A: Grasslands

Option B: Forests

Option C: Planktons

Option D: Epiphytes

Correct Answer: Forests ✔

Option A: 9 x 1013 kg

Option B: 8 x 1012 kg

Option C: 9 x 1011 kg

Option D: 8 x 1010 kg

Correct Answer: 9 x 1013 kg ✔

Option A: 150

Option B: 1,500

Option C: 300

Option D: 3,000

Correct Answer: 1,500 ✔

Option A: Metabolism of producers

Option B: Metabolism of consumers

Option C: Both (a) & (b)

Option D: Combustion of fuel

Correct Answer: Combustion of fuel ✔

Option A: CO2 of carbonic rocks

Option B: Atmospheric CO2

Option C: Fossil fuel

Option D: All of the above

Correct Answer: Atmospheric CO2 ✔

Option A: Inorganic phosphates are lost by leaching

Option B: Ocean phosphates are lost by sedimentation

Option C: Soluble phosphates are lost by erosion

Option D: Soil has plenty of dissolved phosphates

Correct Answer: Ocean phosphates are lost by sedimentation ✔

Option A: Hydrologic

Option B: Phosphorus

Option C: Nitrogen

Option D: Sulphur

Correct Answer: Hydrologic ✔

Option A: Producers only

Option B: Producers and consumers

Option C: Consumers and decomposers

Option D: All of these

Correct Answer: Consumers and decomposers ✔

Option A: 75

Option B: 65

Option C: 85

Option D: 95

Correct Answer: 95 ✔

Option A: Secondary productivity

Option B: Tertiary productivity

Option C: Both (a) & (b)

Option D: Net productivity

Correct Answer: Secondary productivity ✔

Option A: 28.6

Option B: 26.8

Option C: 22.6

Option D: 22.8

Correct Answer: 28.6 ✔

Option A: 0.2-0.4

Option B: 2?4

Option C: 4?6

Option D: 0.6-0.8

Correct Answer: 2?4 ✔

Option A: Producers more than herbivores

Option B: Producers equal to herbivores

Option C: Producers less than herbivores

Option D: Variable

Correct Answer: Producers less than herbivores ✔

Option A: Net production

Option B: Secondary production

Option C: Net storage

Option D: Net primary production

Correct Answer: Net primary production ✔

Option A: A feedback mechanism

Option B: A self-regulatory mechanism

Option C: State of equilibrium

Option D: Influence of production

Correct Answer: State of equilibrium ✔

Option A: Herbivore and carnivore

Option B: Carnivore and detrivore

Option C: Herbivore and detrivore

Option D: All of these

Correct Answer: Herbivore and carnivore ✔

Option A: Energy

Option B: Materials

Option C: Both (a) & (b)

Option D: Standing state

Correct Answer: Both (a) & (b) ✔

Option A: Upright

Option B: Inverted

Option C: Linear

Option D: Rhomboidal

Correct Answer: Upright ✔

Option A: Clements

Option B: Kormondy

Option C: Warming

Option D: Elton

Correct Answer: Elton ✔

Option A: Always temporary

Option B: Always permanent

Option C: Either of these

Option D: Rarely permanent

Correct Answer: Either of these ✔

Option A: Yeast and Monotropa

Option B: Rhizopus and Riccia

Option C: Ulothrix and Yeast

Option D: All of these

Correct Answer: Yeast and Monotropa ✔

Option A: 112,887

Option B: 118,872

Option C: 181,872

Option D: 112,788

Correct Answer: 118,872 ✔

Option A: 5%

Option B: 3.50%

Option C: 1%

Option D: 0.20%

Correct Answer: 1% ✔

Option A: 78.2, 29.3

Option B: 78.2, 3.5

Option C: 29.3, 3.5

Option D: 23.9, 5.3

Correct Answer: 29.3, 3.5 ✔

Option A: Upright

Option B: Inverted

Option C: Rhomboidal

Option D: Linear

Correct Answer: Upright ✔

Option A: Harvest index

Option B: A feedback mechanism

Option C: Regulation of equilibrium

Option D: Reverse energy flow

Correct Answer: Regulation of equilibrium ✔

Option A: Cyclic only

Option B: Cyclic and linear

Option C: Linear and cyclic

Option D: Linear only

Correct Answer: Cyclic and linear ✔

Option A: Standing quality

Option B: Climatic regime

Option C: Transducers

Option D: Humification and mineralization

Correct Answer: Humification and mineralization ✔

Option A: Inverted

Option B: Upright

Option C: Rhomboidal

Option D: Liver

Correct Answer: Upright ✔

Option A: Alpine zone

Option B: Sub-alpine zone

Option C: Temperate zone

Option D: Sub-tropical zone

Correct Answer: Sub-alpine zone ✔

Option A: Rhombiodal

Option B: Upright

Option C: Inverted

Option D: Linear

Correct Answer: Rhombiodal ✔

Option A: T4

Option B: T3

Option C: T2

Option D: T1

Correct Answer: T3 ✔

Option A: Biosphere

Option B: Ecosphere

Option C: Ecosystem

Option D: Biome

Correct Answer: Ecosystem ✔

Option A: One

Option B: Less than one

Option C: More than one

Option D: Any of these

Correct Answer: One ✔

Option A: 10%

Option B: 0.15%

Option C: 1%

Option D: 1.50%

Correct Answer: 1% ✔

Option A: Trophic level efficiency

Option B: Photosynthetic efficiency

Option C: Net production efficiency

Option D: Assimilation efficiency

Correct Answer: Assimilation efficiency ✔

Option A: Savana

Option B: Autotrophic

Option C: Heterotrophic

Option D: Tundra

Correct Answer: Tundra ✔

Option A: Herbivores

Option B: Converters

Option C: Transducers

Option D: All of these

Correct Answer: Herbivores ✔

Option A: 100

Option B: 50

Option C: 10

Option D: 1

Correct Answer: 1 ✔

Option A: Decomposers

Option B: Detritivores

Option C: Both (a) & (b)

Option D: Heterotrophs

Correct Answer: Both (a) & (b) ✔

Option A: Ectosome

Option B: Ecosphere

Option C: Microcosm

Option D: Holocene

Correct Answer: Ecosphere ✔

Option A: Always

Option B: Only when he lives in big cities

Option C: Only when he lives in forest

Option D: Never

Correct Answer: Always ✔

Option A: Third trophic level

Option B: Fourth trophic level

Option C: First trophic level

Option D: Second trophic level

Correct Answer: First trophic level ✔

Option A: The balance will be permanently upset because the rabbits will eat the grass in the system and die of starvation

Option B: The ‘balance’ will be restored by an increase in the wolf population

Option C: Epidemics will break out in the rabbits and kill all of them

Option D: Rabbits will starts eating each other

Correct Answer: B. The ‘balance’ will be restored by an increase in the wolf population ✔

Option A: Grassland ecosystems

Option B: Pond ecosystems

Option C: Parasitic ecosystems

Option D: Forest ecosystems

Correct Answer: Pond ecosystems ✔

Option A: sugar stored in plants

Option B: Light received from the sun

Option C: Heat liberated during fermentation

Option D: Heat liberated during respiration

Correct Answer: Light received from the sun ✔

Option A: Energy

Option B: Oxygen

Option C: Living organism

Option D: Bacteria

Correct Answer: Energy ✔

Option A: Standing crop

Option B: Standing quality

Option C: Both (a) & (b)

Option D: Standing state

Correct Answer: Standing crop ✔

Option A: Producer-consumer arrangement

Option B: Refers to grazing food chain only

Option C: Never forms a food web

Option D: Never photosynthesis dependent

Correct Answer: Producer-consumer arrangement ✔