Ecology And General Silviculture MCQs

Option A: Estuarine

Option B: Lotic

Option C: Lentic

Option D: None of these

Correct Answer: Estuarine ✔

Option A: Plants only

Option B: Animals only

Option C: Plants and animals

Option D: Plants or animals

Correct Answer: Plants and animals ✔

Option A: Sea

Option B: Forests

Option C: Deserts

Option D: In all these places

Correct Answer: In all these places ✔

Option A: Biosphere

Option B: Community

Option C: Biome

Option D: Association

Correct Answer: Biosphere ✔

Option A: Herbivore

Option B: Photosynthesis

Option C: Carnivore

Option D: Symbiotic

Correct Answer: Herbivore ✔

Option A: Insectivorous type

Option B: Heterotrophs

Option C: Chemotrophs

Option D: Autotrophs

Correct Answer: Autotrophs ✔

Option A: A community of organisms interacting with one another

Option B: That part of the earth and its atmosphere, which inhabits living organisms

Option C: The flora on land

Option D: The flora in an ocean

Correct Answer: That part of the earth and its atmosphere, which inhabits living organisms ✔

Option A: Oxygen

Option B: Carbon dioxide

Option C: Fish feed

Option D: Decoration

Correct Answer: Oxygen ✔

Option A: Ecosystem

Option B: Ectosome

Option C: Biosphere

Option D: Bioeconomic

Correct Answer: Biosphere ✔

Option A: Biome

Option B: Environmental complex

Option C: Biological spectrum

Option D: Biological clocks

Correct Answer: Biome ✔

Option A: Cause human disease

Option B: Cause diseases of other plants

Option C: Are useful in several industries

Option D: Bring about decomposition of dead animals and plant remains

Correct Answer: Bring about decomposition of dead animals and plant remains ✔

Option A: A primary consumer

Option B: A primary decomposer

Option C: Final decomposer

Option D: The apex of the food pyramid

Correct Answer: The apex of the food pyramid ✔

Option A: Primary producer

Option B: Secondary consumer

Option C: A decomposer

Option D: Herbivores

Correct Answer: Secondary consumer ✔

Option A: Photobiology

Option B: Phytogeography

Option C: Ecosystem

Option D: Phytosociology

Correct Answer: Ecosystem ✔

Option A: A functional unit of biotic and abiotic components which have an energy source

Option B: Either a part of land surface, a body of fresh water or the open oceans

Option C: A functional unit consisting of sunlight, air water and minerals

Option D: A system consisting of an energy source, producers and consumers

Correct Answer: A functional unit of biotic and abiotic components which have an energy source ✔

Option A: Primary consumer

Option B: Carnivore

Option C: Decomposer

Option D: Secondary consumer

Correct Answer: Secondary consumer ✔

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: One

Option B: Two

Option C: Three

Option D: Four

Correct Answer: Three ✔

Option A: By which life originated

Option B: Where individuals interact with each other

Option C: Which relates to spherical organisms

Option D: Organic compound by which the life diminishes

Correct Answer: Where individuals interact with each other ✔

Option A: The primary producers

Option B: Primary producers only sometimes

Option C: The decomposers

Option D: The consumers

Correct Answer: The primary producers ✔

Option A: Photosynthesis-consumer-decomposer

Option B: Decomposer-consumer-photosynthesis

Option C: Photosynthesis-decomposer-consumer

Option D: Consumer-photosynthesis-decomposer

Correct Answer: Photosynthesis-consumer-decomposer ✔

Option A: Linear

Option B: Upright

Option C: Irregular

Option D: Inverted

Correct Answer: Upright ✔

Option A: Producers

Option B: Decomposers

Option C: Tertiary consumers

Option D: Primary consumers

Correct Answer: Producers ✔

Option A: Only the plants

Option B: Both biological and non-biological processes

Option C: Only the living organisms

Option D: Only the animals

Correct Answer: Both biological and non-biological processes ✔

Option A: Feedback mechanism

Option B: Homeotherms

Option C: Homozygous

Option D: Homeostasis

Correct Answer: Heterozygous ✔

Option A: Law of limiting factors

Option B: Liebig’s law of minimum

Option C: Laws of thermo dynamics

Option D: Shelford’s law of tolerance

Correct Answer: Laws of thermo dynamics ✔

Option A: Only the herbivores will die

Option B: All the animal will die

Option C: Only the carnivores will die

Option D: It will not matter to anyone because chemosynthetic bacteria will produce food for all

Correct Answer: All the animal will die ✔

Option A: Grasshopper, frog, snake

Option B: Grasshopper, rat, snake

Option C: Millipedes, centipedes, sparrow

Option D: Earthworm, hen, rat

Correct Answer: Grasshopper, frog, snake ✔

Option A: Autotrophic

Option B: Heterotrophic

Option C: Herbivores

Option D: Atrophic

Correct Answer: Herbivores ✔

Option A: A producer

Option B: A primary consumer

Option C: A secondary consumer

Option D: A tertiary consumer

Correct Answer: A tertiary consumer ✔

Option A: Food web

Option B: Pyramid of numbers

Option C: Succession

Option D: Predator-prey relationship

Correct Answer: Pyramid of numbers ✔

Option A: First link of the food chain and are known as primary producers

Option B: Second link of the food chain and are herbivorous

Option C: Third link of the food chain and are tertiary consumers

Option D: The end of the food chain and are decomposers

Correct Answer: The end of the food chain and are decomposers ✔

Option A: Food chain

Option B: Web of food

Option C: Biomass

Option D: Interdependence

Correct Answer: Food chain ✔

Option A: Primary consumers

Option B: Producers

Option C: Secondary consumers

Option D: Top consumers in this food chain

Correct Answer: Primary consumers ✔

Option A: Productivity control

Option B: Food chain mechanism

Option C: Feedback mechanism

Option D: Any of these

Correct Answer: Feedback mechanism ✔

Option A: Primary producers is larger than that of primary consumers

Option B: Secondary consumers is the largest because they are the most powerful

Option C: Primary consumers outnumber primary producers

Option D: Primary consumers is the least dependent upon primary producers

Correct Answer: Primary producers is larger than that of primary consumers ✔

Option A: Chemical cycle

Option B: Biogeochemical cycle

Option C: Geological cycle

Option D: Geochemical cycle

Correct Answer: Biogeochemical cycle ✔

Option A: Primary consumers

Option B: Secondary consumers

Option C: Carnivores

Option D: Primary producers

Correct Answer: Primary consumers ✔

Option A: All the atmospheric gases

Option B: Only carbon, hydrogen and oxygen

Option C: Energy only

Option D: All the above components

Correct Answer: Energy only ✔

Option A: Petroleum

Option B: Coal

Option C: Nuclear fuel

Option D: Trees

Correct Answer: Nuclear fuel ✔

Option A: Two types

Option B: Three types

Option C: Four types

Option D: Five types

Correct Answer: Three types ✔

Option A: T1

Option B: T3

Option C: T5

Option D: T4

Correct Answer: T5 ✔

Option A: Food chains

Option B: Food web

Option C: Both (a) & (b)

Option D: None of the above

Correct Answer: Both (a) & (b) ✔

Option A: Tropical rainforest

Option B: Temperate grassland

Option C: Tropical deciduous forest

Option D: Desert shrub

Correct Answer: Desert shrub ✔

Option A: Carbon

Option B: Potassium

Option C: Nitrogen

Option D: Free energy

Correct Answer: Free energy ✔

Option A: Herbivores

Option B: Carnivores

Option C: Producers

Option D: None of these

Correct Answer: Carnivores ✔

Option A: Scavenger

Option B: Saprophyte

Option C: Carnivore

Option D: Herbivore

Correct Answer: Herbivore ✔

Option A: Food chains

Option B: Biological control

Option C: Natural barriers

Option D: All the above

Correct Answer: Food chains ✔

Option A: Mineral

Option B: Water

Option C: Forest

Option D: Solar energy

Correct Answer: Forest ✔

Option A: Upright

Option B: Inverted

Option C: Any of the two

Option D: None of the above

Correct Answer: None of the above ✔

Option A: T3

Option B: T4

Option C: T2

Option D: T1

Correct Answer: T4 ✔

Option A: Inverted

Option B: Upright

Option C: Both of these/Horizontal

Option D: Inverted in forest ecosystem

Correct Answer: Upright ✔

Option A: Carbohydrates in plants

Option B: Biomass

Option C: Solar energy

Option D: Producers

Correct Answer: Solar energy ✔

Option A: Energy flow and food chain

Option B: Mineral recycling and energy flow

Option C: Food chain and decomposers

Option D: Energy flow and decomposers

Correct Answer: Food chain and decomposers ✔

Option A: Producer

Option B: Consumer

Option C: Herbivore

Option D: None of these

Correct Answer: Consumer ✔

Option A: Primary consumers

Option B: Producers

Option C: Secondary consumers

Option D: Tertiary consumers

Correct Answer: Producers ✔

Option A: Open sea

Option B: Grasslands and pastures

Option C: Coniferous forests

Option D: Tropical and sub-tropical forest

Correct Answer: Tropical and sub-tropical forest ✔

Option A: Upright

Option B: Inverted

Option C: Anything possible

Option D: None is correct

Correct Answer: Inverted ✔

Option A: Cycling of materials

Option B: Flow of energy

Option C: Both (a) & (b)

Option D: None of the above

Correct Answer: Both (a) & (b) ✔

Option A: Tiger and wild beer

Option B: Snake and earthworm

Option C: Deer and honey bee

Option D: Crow and cow

Correct Answer: Deer and honey bee ✔

Option A: Phototrophs are transducers

Option B: Some herbivores are converters

Option C: Microconsumers are saprotrophs

Option D: All are correct

Correct Answer: Microconsumers are saprotrophs ✔

Option A: The biomass of producers is less than the combined biomass of consumers and decomposers

Option B: No general statement can be made about relative biomass of different ecological groups

Option C: The biomass of secondary consumers is usually greater than the biomass of primary consumers

Option D: The biomass of producers is generally greater than the biomass of primary consumers

Correct Answer: No general statement can be made about relative biomass of different ecological groups ✔

Option A: Nitrogen fixing organisms

Option B: Photosynthesizing organisms

Option C: Respiration

Option D: Decomposers

Correct Answer: Photosynthesizing organisms ✔

Option A: Herbivore

Option B: Carnivore

Option C: Autotroph

Option D: Omnivore

Correct Answer: Omnivore ✔

Option A: Pond ecosystem

Option B: Grassland ecosystem

Option C: Desert ecosystem

Option D: Forest ecosystem

Correct Answer: Pond ecosystem ✔

Option A: The first trophic level

Option B: The second trophic level

Option C: The third trophic level

Option D: The fourth trophic level

Correct Answer: The first trophic level ✔

Option A: They are widely distributed

Option B: They are firmly fixed to soil

Option C: They alone have the capacity to fix the atmospheric CO2 in the presence of sunlight

Option D: There are more herbivorous animals than the carnivorous

Correct Answer: They alone have the capacity to fix the atmospheric CO2 in the presence of sunlight ✔

Option A: Producers and primary consumers

Option B: Producer, herbivores and carnivores

Option C: Producers, carnivores and decomposers

Option D: Producers, consumers and decomposers

Correct Answer: Producers, consumers and decomposers ✔

Option A: Plants of a particular area

Option B: Area occupied by living beings

Option C: Plants of world

Option D: Spherical plants

Correct Answer: Area occupied by living beings ✔

Option A: Producer

Option B: Primary consumer only

Option C: Primary and Secondary consumer

Option D: Secondary consumer only

Correct Answer: Primary and Secondary consumer ✔

Option A: Mineralization

Option B: Humification

Option C: Nutrient immobilization

Option D: Microbe immobilization

Correct Answer: Nutrient immobilization ✔

Option A: Usually primary consumers

Option B: Usually secondary consumers

Option C: Usually decomposers rather than consumers

Option D: Usually secondary or tertiary consumers

Correct Answer: Usually secondary or tertiary consumers ✔

Option A: Flow of energy

Option B: Cycling of matters

Option C: Both (a) & (b)

Option D: None of the above

Correct Answer: Both (a) & (b) ✔

Option A: Producer and primary consumer

Option B: Producer and decomposer

Option C: Primary consumer and decomposer

Option D: Primary and secondary consumer

Correct Answer: Producer and decomposer ✔

Option A: Meadow

Option B: Forested river bank

Option C: Cave

Option D: Pond

Correct Answer: Cave ✔

Option A: Energy

Option B: Number

Option C: Biomass

Option D: All of these

Correct Answer: Energy ✔

Option A: Primary producer

Option B: Consumer

Option C: Primary producer and consumer

Option D: None of the above

Correct Answer: Primary producer ✔

Option A: Temperate grasslands

Option B: Tropical grasslands

Option C: Prairie grasslands

Option D: Steppes grasslands

Correct Answer: Temperate grasslands ✔

Option A: Pure vegetarians

Option B: Milk drinker and vegetarian

Option C: Non-vegetarians

Option D: Dependent upon milk, egg and vegetarian habit

Correct Answer: Dependent upon milk, egg and vegetarian habit ✔

Option A: Group of plants, which act as the energy suppliers

Option B: Group of organisms which form population

Option C: Functional unit for ecological studies

Option D: None of these

Correct Answer: Functional unit for ecological studies ✔

Option A: Commensals

Option B: Herbivores

Option C: Fauna and flora

Option D: Planktons

Correct Answer: Planktons ✔

Option A: A community of organisms interacting with one another

Option B: The abiotic component of an area

Option C: The part of the earth and its atmosphere where living organisms exist

Option D: A community of organisms together with the environment in which they live

Correct Answer: A community of organisms together with the environment in which they live ✔

Option A: Artificial ecosystem

Option B: Forest ecosystem

Option C: Natural ecosystem

Option D: Grassland ecosystem

Correct Answer: Natural ecosystem ✔

Option A: On the lithosphere surface

Option B: In the hydrosphere

Option C: In the lithosphere, hydrosphere and atmosphere

Option D: In the lithosphere and hydrosphere

Correct Answer: In the lithosphere, hydrosphere and atmosphere ✔

Option A: Checking pollution

Option B: Fertility of soil

Option C: Stabilizing the ecosystem

Option D: Improving food-web

Correct Answer: Stabilizing the ecosystem ✔

Option A: Savana ecosystem

Option B: Taiga ecosystem

Option C: Tundra ecosystem

Option D: None of the above

Correct Answer: Taiga ecosystem ✔

Option A: Only bacteria and fungi

Option B: Only microscopic animals

Option C: The above two types of organisms plus macroscopic animals

Option D: Only the above two types of organisms

Correct Answer: Only bacteria and fungi ✔

Option A: Closely related species occupying the same niche

Option B: Closely related species occupying different niche

Option C: Unrelated species occupying the same niche

Option D: Species occupying different overlapping ecosystems

Correct Answer: Closely related species occupying the same niche ✔

Option A: Both open and closed unit depending upon the biomass present

Option B: Closed unit

Option C: Open unit

Option D: Both open and closed unit depending upon community type

Correct Answer: Open unit ✔

Option A: Holocoene

Option B: Cherposem

Option C: Biosystem

Option D: Geobiocoenosis

Correct Answer: Cherposem ✔

Option A: A localized association of several plants and animals

Option B: Different communities of plants, animals and microbes, together with their physico-chemical environments

Option C: Different communities of plants and microbes plus their physico-chemical environments

Option D: None of the above

Correct Answer: Different communities of plants, animals and microbes, together with their physico-chemical environments ✔

Option A: Daubenmire/R.Misra/Koestle

Option B: Tansley

Option C: Weaver and Clements

Option D: Odum/Kormondy

Correct Answer: Tansley ✔

Option A: Plants and animals

Option B: Weeds and trees

Option C: Biotic and abiotic

Option D: Frogs and men

Correct Answer: Biotic and abiotic ✔