An organism that can not survive without any host is

  • prey
  • predator
  • virus
  • parasite

Relationship between honeyguide bird and the badger is an example of

  • parasitism
  • mutualism
  • commensalism
  • none of above

The atmosphere is the reservoir of free gaseous

  • carbon
  • nitrogen
  • oxygen
  • sulphur

The kind of symbiosis in which only one partner is benefited and the other is not harmed and benefited is called

  • temporary parasitism
  • temporary mutualism
  • permanent mutualism
  • commensalism

Considering the pyramid of numbers, the consumers that are maximum in number and smallest in size are called

  • tertiary consumers
  • producers
  • tertiary decomposers
  • secondary decomposers

All the ecosystem of the world together form

  • biome
  • biosphere
  • community
  • biomass

The kind of parasitism in which the parasite lived as a free organism and part of its life is only spent as a parasite is called

  • permanent mutualism
  • temporary parasitism
  • permanent parasitism
  • temporary mutualism

All the substances that are the major causes of pollution are classified as

  • compounds
  • acids
  • oxides
  • pollutants

Primary carnivores are also called

  • omnivores
  • primary consumers
  • secondary consumers
  • tertiary consumers

The living part of the ecosystem is made by

  • air and water
  • soil and water
  • abiotic components
  • biotic components

The living part of living organisms of the ecosystem is called

  • biosphere components
  • ecology components
  • abiotic components
  • biotic components

Considering the components of the ecosystem, the example of producers is

  • ants and flies
  • photosynthetic bacteria
  • cattle
  • snakes

The thickness of biosphere of Earth (in kilometers) is about

  • 35 kilometers
  • 30 kilometers
  • 20 kilometers
  • 40 kilometers

The establishment of new forest is

  • deforestation
  • reforestation
  • afforestation
  • forestation

The example of mutualism is

  • mosquitoes and protozoan
  • rhizobium and protozoan
  • protozoan and termites
  • rhizobium and termites

The global warming remains the heat within the earth atmosphere and increase

  • humidity
  • water level
  • temperature
  • air velocity

The cyanide (CN-), fluorine (F2), Sulfur dioxide (SO2), phenol (C6H5), carbon dioxide (CO2) and carbon monoxide (CO) are pollutants released by

  • textile industries
  • steel industries
  • fertilizer industries
  • thermal industries

The nitrogen fixer bacteria that lives in the root nodules of plants is called

  • rhizobium
  • euglena
  • amoeba
  • paramecium

The plants that are carnivorous live as predators include

  • venus fly trap
  • sundew
  • pitcher plant
  • sunflower

The animals that are fed on plants are classified as

  • secondary producers
  • herbivores
  • carnivores
  • omnivores

The interrelationship between the environment and organisms is called

  • ecology
  • geology
  • biotic community
  • abiotic community

A pond, a lake, and forest are examples of

  • natural ecosystems
  • biosphere
  • artificial ecosystems
  • community

A group of organisms of the same species inhabiting a specific region at a certain time is called

  • population
  • ecosystem
  • biosphere
  • community

All viruses are permanent

  • host
  • scavengers
  • predators
  • parasites

The types of symbiosis do not include

  • mutualism
  • symbiosis
  • commensalism
  • predation

The oxides present in Acid rains are Sulphur and

  • nitrogen
  • ammonia
  • carbon
  • oxygen

The organism on which the predators are fed is called

  • assimilator
  • competitor
  • prey
  • predators

The parasites that live on the surface of the host's body are called

  • temporary parasites
  • ectoparasite
  • endoparasite
  • permanent parasites

The interaction between two plants or animals of different species is classified as

  • predation
  • competition
  • symbiosis
  • commensalism

The methane (CH4), carbon dioxide (CO2) and ozone (O3) are classified as

  • co-dominance gases
  • dominance gases
  • greenhouse gases
  • acidic gases
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