Organism and the Environment Test 1

Total Questions:50 Total Time: 75 Min

Remaining:

 

Questions 1 of 50

Question:The term 'Oekologie' (ecology) was coined by:

Answers Choices:

Linnaeus

Harvey

Haeckel

Odum

Questions 2 of 50

Question:Term ecology was proposed by:

Answers Choices:

Reiter

Aristotle

Brown

Khorana

Questions 3 of 50

Question:The study of ecology was started by:

Answers Choices:

EE. Clements

Johannes Warming

Charles Elton

Karl Mobius

Questions 4 of 50

Question:Nonliving components of the environment including soil, water, air, light, nutrients.etc, are called:

Answers Choices:

Biotic factors

Abiotic factors

Limiting factors

Ecological factors

Questions 5 of 50

Question:The energy which is utilized by living world is primarily:

Answers Choices:

Heat

Light

Electricity

Kinetic

Questions 6 of 50

Question:The water zone below 200 meters is called:

Answers Choices:

euphotic zone

disphotic zone

aphotic zone

pelagic zone

Questions 7 of 50

Question:As per Allen's rule which of the following statements is correct?

Answers Choices:

Limbs of homeotherms of warmer regions of the earth are usually shorter than the homeotherms of colder regions.

Limbs of homeotherms of colder region of the earth are usually shorter than homeotherms of warmer region.

Limbs of poikilotherms of warmer regions of the earth are usually shorter than poikilotherms of colder regions.

Limbs of poikilotherms of colder region of the earth are usually shorter than the poikilotherms of warmer regions.

Questions 8 of 50

Question:The direct and dominating factor of plant vegetation is:

Answers Choices:

Light

Water

Temperature

\({\rm{C}}{{\rm{O}}_{\rm{2}}}\)

Questions 9 of 50

Question:Which one of the following is a direct ecologi­cal factor?

Answers Choices:

Soil structure

Wind

Altitude

Temperature

Questions 10 of 50

Question:Development of soil from parent rock is termed as:

Answers Choices:

edaphic factor

pedogenesis

edaphotropism

edaphic climax

Questions 11 of 50

Question:The most common source of water in plants from soil is:

Answers Choices:

gravitational water

hygroscopic water

rain water

capillary water

Questions 12 of 50

Question:Soil particles arranged in order of increasing size are:

Answers Choices:

clay, sand and silt

silt, sand and clay

sand, silt and clay

clay, silt and sand

Questions 13 of 50

Question:Humus is important for plant growth because:

Answers Choices:

it is made up of dead organic matter

it is rich in nutrients and increases the water holding capacity of soil

it is derived from leaves

it is partially decomposed

Questions 14 of 50

Question:The least porous soil among the following is:

Answers Choices:

Sandy soil

Loam soil

Clay soil

Fine gravel

Questions 15 of 50

Question:Water logging occurs in:

Answers Choices:

Clay soil

Sandy soil

Gravel soil

Loamy soil

Questions 16 of 50

Question:Select an animal which may be prey and also a predator:

Answers Choices:

Rabbit

Lion

Frog

Man

Questions 17 of 50

Question:Killing and consuming one's own kind or intra specific predation is called:

Answers Choices:

Cannibalism

Parasitism

Autophagy

None of these

Questions 18 of 50

Question:A parasite living within tissue of host is:

Answers Choices:

epiphyte

endophyte

ectophyte

none of the above

Questions 19 of 50

Question:The relationship between water tern Azolla and cyanobacterium Anabaena is:

Answers Choices:

Symbiosis

Competition

Scavenging

Commensalism

Questions 20 of 50

Question:Mimicry is:

Answers Choices:

structural adaptation

animal association adaptation

protective adaptation

regulated by environmental factors

Questions 21 of 50

Question:A natural ecosystem:

Answers Choices:

depends on man

depends on plants

depends on animals

is auto-operated

Questions 22 of 50

Question:Driving force of ecosystem is:

Answers Choices:

Solar energy

Biomass

Producer

Carbohydrate in plants

Questions 23 of 50

Question:Which of the following is correct about food chain:

Answers Choices:

zooplankton \( \to \) phytoplankton \( \to \) fishes

phytoplankton -* fishes —»zooplankton

phytoplankton —»zooplankton —» fishes

none of these

Questions 24 of 50

Question:Green plants form:

Answers Choices:

complete food chain

first trophic level

second trophic level

third trophic level

Questions 25 of 50

Question:Which of the following ecosystem is least productive?

Answers Choices:

Deep oceans

Moist forest

Shallow oceans

Grasslands

Questions 26 of 50

Question:The concept of ecosphere includes:

Answers Choices:

non-transfer of food

no flow in energy

balance of ecological processes

interactions between living and their environment

Questions 27 of 50

Question:In ecological pyramid of numbers from base to apex, the number of carnivores:

Answers Choices:

increases

decreases

remains static

none of the above

Questions 28 of 50

Question:In the pond ecosystem, the shape of pyramid of numbers is:

Answers Choices:

upright

inverted

linear

irregular

Questions 29 of 50

Question:In India, coniferous forests are found in:

Answers Choices:

MP

Satpura hills

Himalayan region

Rajasthan

Questions 30 of 50

Question:Alpine forest occurs at an altitude of:

Answers Choices:

3900-6000 m

1900-3000 m

1000-1500 m

500-1000 m

Questions 31 of 50

Question:During extreme aridity, desert rat:

Answers Choices:

stores water

saves water

uses metabolic water

does not use water

Questions 32 of 50

Question:A natural region characterised by hot summer, warm winter and treeless vegetation is:

Answers Choices:

tropical desert

steppes grassland

savanna grassland

temperate desert

Questions 33 of 50

Question:Aquatic.animals that are able to move at will through the water:

Answers Choices:

Nekton

Neuston

Plankton

All of these

Questions 34 of 50

Question:The swimming fishes constitute:

Answers Choices:

Planktons

Neustons

Nektons

Benthons

Questions 35 of 50

Question:233.The natural cycle that circulates elements between the earth and the environment is called:

Answers Choices:

Biogeochemical cycle

Biological cycle

Chemical cycle

Nitrogen cycle

Questions 36 of 50

Question:234.Biogeochemical cycling means:

Answers Choices:

cycling of water

cycling of nutrients in an ecosystem

cycling of energy in an ecosystem

cycling of gases between plants and the atmosphere

Questions 37 of 50

Question:Which is non-conventional source of energy?

Answers Choices:

Petroleum

Coal deposits

Electricity from nuclear power

Solar radiations

Questions 38 of 50

Question:Which is natural non-conventional source of energy?

Answers Choices:

Coal deposits

Wildlife

Water

Forest

Questions 39 of 50

Question:The abundance of a species population within its habitat is called:

Answers Choices:

niche density

absolute density

relative density

regional density

Questions 40 of 50

Question:What is the most important factor for the success of animal population?

Answers Choices:

Natality

Adaptability

Unlimited food supply

Interspecies activity

Questions 41 of 50

Question:Which one of the following is source of energy to an ecosystem?

Answers Choices:

ATP

solar energy

sugar stored

heat liberated during respiration

Questions 42 of 50

Question:The factor that influences the plants through the physical and chemical composition of the soils is:

Answers Choices:

biotic factor

edaphic factor

climatic factor

none of the above

Questions 43 of 50

Question:Lotic ecosystem refers to:

Answers Choices:

static water system

ecosystem of estuaries

deep marine water systems

ecosystem of flowing water

Questions 44 of 50

Question:The sphere of living matter together with water, air and soil on the surface of earth is called:

Answers Choices:

hydrosphere

lithosphere

biosphere

atmosphere

Questions 45 of 50

Question:In an ecosystem, which of the following occurs in abiotic components?

Answers Choices:

Flow of energy

Cycling of materials

Both of these

None of these

Questions 46 of 50

Question:The first link in any food chain is a green plant because:

Answers Choices:

they are firmly fixed to soil

they are widely distributed

they alone have the capacity to fix the atmospheric \(C{O_2}\) in the presence of sun­light

there are more herbivorous animals than carnivores

Questions 47 of 50

Question:The factors governing the structure of soil are:

Answers Choices:

topographic

biotic

temperature

edaphic

Questions 48 of 50

Question:A true parasite is one which:

Answers Choices:

is completely attached to the host

is not completely dependent on host

complete its life-cycle in different hosts

wholly completes its life-cycle in one host

Questions 49 of 50

Question:The grasslands in Asia are known as:

Answers Choices:

pampas

veldt

prairies

steppes

Questions 50 of 50

Question:Which one of the following is the sedimentary cycle?

Answers Choices:

Carbon cycle

Oxygen cycle

Hydrogen cycle

Phosphorus cycle