Organism and the Environment Test 6

Total Questions:50 Total Time: 75 Min

Remaining:

 

Questions 1 of 50

Question:Ecology deals with the study of:

Answers Choices:

microorganisms

economic differences of countries

insects

relationship between living and nonliving

Questions 2 of 50

Question:Branch of zoology that deals with the distri­bution of animals on earth is called as:

Answers Choices:

Biogeography

Phytogeography

Zoogeography

Synecology

Questions 3 of 50

Question:Science which deals with the management of plants, animals, soil,water and minerals is:

Answers Choices:

Autecology

Synecology

Resource ecology

Phytosociology

Questions 4 of 50

Question:Dormancy in animals through a drought or dry season is called:

Answers Choices:

Hibernation

Aestivation

Diapause

None of these

Questions 5 of 50

Question:Warm, oxygen-rich upper layer of water in a lake or other body of water is called:

Answers Choices:

Thermocline

Epilimnion

Hypolimnion

All of these

Questions 6 of 50

Question:Pedology is the study of:

Answers Choices:

Rocks

Soils

Crop diseases

Locomotion of animals

Questions 7 of 50

Question:When the fertility of the soil is lost, it is:

Answers Choices:

soil conservation

soil erosion

soil conversion

soil silting

Questions 8 of 50

Question:Which of the following soils is suited for fossorial animals like earthworms?

Answers Choices:

loam with humus

clay

silt

sand

Questions 9 of 50

Question:Free living aerobic nitrogen fixing bacterium of soil is:

Answers Choices:

Azotobacter

Rhizobium

Clostridium

All of these

Questions 10 of 50

Question:When the presence of one living organism influences the presence of another living or­ganism, such an ecological factor is called:

Answers Choices:

climatic factor

biotic factor

edaphic factor

all of these

Questions 11 of 50

Question:The relationship between two species in which one is inhibited or harmed by the presence of the other is:

Answers Choices:

Commensalism

Amensalism

Mutualism

Symbiosis

Questions 12 of 50

Question:Occurrence of zoochlorellae in the body wall of Hydra is an example of:

Answers Choices:

Predation

Commensalism

Symbiosis

Food chain

Questions 13 of 50

Question:The nature of interrelationship between corals and zooxanthellae is called:

Answers Choices:

cleaning symbiosis

physiological symbiosis

amensalism

protocooperation

Questions 14 of 50

Question:Ecosystem has two components:

Answers Choices:

Plants and animals

Biotic and abiotic

Weeds and trees

None of the above

Questions 15 of 50

Question:Pond is an example of:

Answers Choices:

Natural ecosystem

Artificial ecosystem

Grassland ecosystem

Forest ecosystem

Questions 16 of 50

Question:Equilibrium in atmosphere is maintained by:

Answers Choices:

producers

consumers

decomposers

all of these

Questions 17 of 50

Question:Food levels in an ecosystem are called:

Answers Choices:

trophic levels

consumer levels

producer levels

herbivore levels

Questions 18 of 50

Question:The transfer of food energy from plants through herbivores to carnivores is called:

Answers Choices:

Ecosystem

Ecological niche

Biotic succession

Food-chain

Questions 19 of 50

Question:Which are the biotic components of forest ecosystem?

Answers Choices:

Producers

Consumers

Decomposers

All of the above

Questions 20 of 50

Question:If all green plants on the earth are destroyed:

Answers Choices:

all pests shall die

only herbivorous animals shall die

all animals shall die ultimately

nothing shall happen to animals

Questions 21 of 50

Question:Ecological pyramids were first devised by:

Answers Choices:

Charles Elton

R. Hesse

R.A. Lmdeman

Justus von Liebig

Questions 22 of 50

Question:Which of the following biomes is very delicate and recovers from any disturbance only very slowly?

Answers Choices:

Tundra

Savanna

Mangrove

Tropical forest

Questions 23 of 50

Question:The northern circumpolar boreal forest com­prises:

Answers Choices:

Savanna

Taiga

Chaparral

Tundra

Questions 24 of 50

Question:What is ecological equivalent of horses in Australian savanna?

Answers Choices:

Zebra

Antelope

Kangaroo

Bison

Questions 25 of 50

Question:Veldts of Africa and Pampas of South America are:

Answers Choices:

Rain forest biomes

Chaparral biomes

Temperate biomes

Grassland biomes

Questions 26 of 50

Question:Benthoic animals are:

Answers Choices:

deep dwellers in sea

floating organisms

submerged in sea

float on the sea surface

Questions 27 of 50

Question:Littoral form of animals are found:

Answers Choices:

in fresh water

in sea water near the shore

in deep sea

at the bottom of the sea

Questions 28 of 50

Question:The solid components of earth comprise:

Answers Choices:

Hydrosphere

Lithosphere

Atmosphere

Ionosphere

Questions 29 of 50

Question:Plants which are attached to the stones and rocks are:

Answers Choices:

Halophytes

Aerophytes

Lithophytes

Psammophytes

Questions 30 of 50

Question:Burning of fossil fuels affects one of the fol­lowing cycles in nature:

Answers Choices:

Water cycle

Nitrogen cycle

Phosphorus cycle

Carbon cycle

Questions 31 of 50

Question:Which one of the following is a renewable source of energy?

Answers Choices:

Petroleum

Coal

Nuclear fuel

Trees

Questions 32 of 50

Question:Which one of the following is a non-renewable resource?

Answers Choices:

Wildlife

Water

Minerals

Forest

Questions 33 of 50

Question:Honey bee performs various dances to:

Answers Choices:

entertain

compete each others

communicate

all of these

Questions 34 of 50

Question:Physalia colony exhibits:

Answers Choices:

Dimorphism

Polymorphism

Polygyny

Polyandry

Questions 35 of 50

Question:Individuals of the same species inhabiting a particular locality constitute:

Answers Choices:

Community

Flora

Fauna

Population

Questions 36 of 50

Question:Hermit crab and sea anemone relationship is called:

Answers Choices:

Mutualism

Commensalism

Symbiosis

None of these

Questions 37 of 50

Question:What amount of energy is lost in transferring food energy from one trophic level to another?

Answers Choices:

90%

20%

5%

10%

Questions 38 of 50

Question:Plants growing in sandy areas are called:

Answers Choices:

Halophytes

Psammophytes

Oxylophytes

Eremophytes

Questions 39 of 50

Question:Pyramid of energy in a pond ecosystem is always:

Answers Choices:

linear

irregular

inverted

upright

Questions 40 of 50

Question:In a food chain, the total amount of living material is depicted by:

Answers Choices:

pyramid of numbers

pyramid of biomass

pyramid of energy

all of these

Questions 41 of 50

Question:This is an inverted pyramid.

Answers Choices:

Pyramid of energy in a pond ecosystem

Pyramid of biomass in a pond ecosystem

Pyramid of biomass in a grassland ecosys­tem

Pyramid of numbers in a grassland ecosys­tem

Questions 42 of 50

Question:When the organisms live together in such a manner that one organism is benefited, while the other has no effects, it is called:

Answers Choices:

mutualism

commensalism

parasitism

all of the above

Questions 43 of 50

Question:The plants and the animals living in a given area form:

Answers Choices:

consociation

ecotone

biome

biological community

Questions 44 of 50

Question:Approximately how much of the chemical energy within producer tissue becomes chemi­cal energy within herbivore tissue?

Answers Choices:

1%

30%

10%

90%

Questions 45 of 50

Question:Which of the following have evergreen vegeta­tion and drought adapted animals?

Answers Choices:

Tundra

Savannah

Chaparral

Deciduous forest

Questions 46 of 50

Question:Which one of the following always have steeper slope?

Answers Choices:

pyramid of biomass

pyramid of energy

pyramid of number

none of these

Questions 47 of 50

Question:The term 'biosphere' refers to:

Answers Choices:

atmosphere

stratosphere

living community with whole ecosystem

none of these

Questions 48 of 50

Question:Bacteria living in human large intestine feeding on undigested food without harming host show:

Answers Choices:

commensalism

symbiosis

protocooperation

mutualism

Questions 49 of 50

Question:Rhizobium bacterium and root nodules of pea plant is an example of:

Answers Choices:

symbiosis

predation

scavenging

parasitism

Questions 50 of 50

Question:Bamboo plant is growing in a forest. What will be its trophic level?

Answers Choices:

First trophic level (\({{\rm{T}}_{\rm{1}}}\))

Second trophic level (\({{\rm{T}}_{\rm{2}}}\))

Third trophic level (\({{\rm{T}}_{\rm{3}}}\))

Fourth trophic level (\({{\rm{T}}_{\rm{4}}}\))