Test
Unit 6 : Ecology, Evolution & Biodiversity
Preguntas del test (34)
1Ecology is the study of..?
- ALiving things in their environment.
- BOrganisms in their unnatural habitats
- CEcosystems
- DPlants and the competition they face
2An Ecosystem is..?
- AA community of organisms and their surroundings
- BThe environment in which organisms live and with which they interact
- CCommunity of predators only
- DAcommunity of plants and prokaryotes
3The organisms (community) of an ecosystem are called the ____ component & the physical environment is known as the ____ component.
- ABiotic | Abiotic
- BAbiotic | Biotic
- CAbiotic | Antibiotic
- DBiotic | Antibiotic
4A Habitat is..?
- AThe locality in which an organism occurs.
- BWhere the organism is normally found
- CWhere the organism lives
- DWhere the organism has a nest
- EWhere the organism has died
5The population is..?
- AAll the living things of the same species in a habitat at any one time
- BAll the living things in a habitat at any one time
- CAll the different species in an ecosystem atr any one time
6A community is..?
- AAll the living things in a habitat or ecosystem
- BThe total of all the populations of an ecosystem
- CAll the living things of the same species in a habitat at any one time
7Traits of organisms of the same species are..?
- AA group of individuals with common ancestry
- BCapable of interbreeding to produce fertile offspring
- CIncapable of interpbreeding to produce fertile offspring
- DCapable of interbreeding to produce only infertile offspring
8An autotroph is an organism that :
- ASynthesises its organic molecules from simple inorganic substances
- BSynthesises its organic molecules from complex inorganic substances
- CSynthesises its inorganic molecules from simple organic substances
- DSynthesises it organic substances from simple inorganic molecules
- EFeeds itself
9A heterotroph is an organism that :
- AObtains organic molecules from other organisms
- BSynthesises its organic molecules from simple inorganic substances
10Saprotrophs are..?
- AOrganisms that feed on dead plants and animals, and on the waste matter of animals
- BOrganisms that feed on dead plants but not animals or their waste matter
- COrganisms that synthesise their own organic molecules from simple inorganic substances
- DOrganisms that obtain organic molecules from other organisms
11Saprotrophs are known as..?
- ADetrivores
- BDecomposers
- CHerbivores
- DCarnivores
- EComposers
- FProducers
12The trophic level is..?
- AThe level at which an organism feeds in a food chain (it feeding level)
- BThe level at which an organism is consumed in a food chain
- CThe amount of predators an organism has in a food chain
- DThe amount of alternative sources of food an organism has in a food web
13The trophic level of producers is level __; for primary consumers it's level __; Secondary consumers are at level __; tertiary consumers sit at level __; and quaternary consumers at level __ .
- A1 | 2 | 3 | 4 | 5
- B5 | 4 | 3 | 2 | 1
14Food chains tend to be fairly short because :
- AEnergy lost at transfer between trophic levels means few (transfers) can be sustained for long
- BEnergy is lost through death too quickly
- CThere are not enough plants in ecosystems
15Gases in the atmosphere that ____ infra red radiation are referred to as green house gases.
- AAbsorb
- BReflect
- CCombine with
- DRepel
16The precausionary principle is..?
- AWhen an activity raises threats of harm, measures should be taken, even if a cause-and-effect relationship has not been established scientifically.
- BBetter safe than sorry !
- CBetter late than never !
- DWhe an acivity raises threats of harm, measures shoudn't be taken, unless a cause-and-effect relationship has not been established scientifically.
17List the following in chronological order : __ , __ , __ and __ phase.
- ALag | Exponential Growth / Log | Linear Growth | Plateu / Stationary
- BPlateu | Exponential Growth / Log | Linear Growth | Lag
- CExponential Growth / Log | Lag | Linear Growth | Plateu
18Evolution is..?
- AThe process of cummulative change in the heritable characteristics of a population.
- BThe occurance of mutations in the ehritable characteristics of a population.
- CThe process of cummulative change in the non-heritable characteristics of a population.
- DThe process of cummulative change in the heritable characteristics of a ecosystem.
19Examples of Bryophyta are :
- ALiverworts
- BMoss
- CFlowering Plants
- DConifers
- EFerns
20Examples of Filicinophyta :
- AFerns
- BFlowering Plants
- CLiverworts
- DMoss
- EConifers
21Examples of Coniferophyta :
- AConifers
- BMoss
- CLiverworts
- DFlowering Plants
- EPine Trees
22Examples of Angiospermophyta :
- AFlowers
- BGrass
- CMoss
- DLiverworts
- EConifers
- FFerns
23Examples of Porifera :
- ASponges
- BFlatworms
- CSnails
- DMolluscs
- EInsects
- FArachnids
24Examples Of Cnidaria :
- AJellyfish
- BFlatworm
- CSnail
- DSponge
- EInsects
25Examples of Platyhelminthes :
- AFlatworms
- BMolluscs
- CJellyfish
- DInsects
- ESnails
26Examples of Nematoda :
- ARoundworm
- BSnails
- CAracnids
- DSponges
- EJellyfish
27Examples of Mollusca :
- ASnails
- BMolluscs
- CSponges
- DFlatworms
- EJellyfish
28Examples of Anthropoda :
- AAracnids
- BInsects
- CCrustaceans
- DSponges
- EFlatworms
- FMolluscs
29Pyramid of energy shows the flow of energy in a food chain.
- AVerdadero
- BFalso
30Radiant energy from the sun reaches the earth and warms it along with the sea. The earth then radiates infra-red radiation back towards space, however, clouds reflect it back and much is absorbed by gases in the atmosphere. This effect is called the greenhouse effect and is needed to keep the earth warm.
- AVerdadero
- BFalso
31Naturally occurring greenhouse gases include:
- APhosphate
- BMethane
- CWater Vapour
- DPhosphorous
- ECarbon dioxide
- FCFCs
32 As a population increases, environmental resistance occurs i.e space and resources increase, and competition decreases.
- AVerdadero
- BFalso
33Intense cold is an example of a density-independent factor.
- AVerdadero
- BFalso
34Natural selection can essentially be described as 'survival of the fittest'.
- AVerdadero
- BFalso
Información
- Descripción
- IBD (Unit 6 : Ecology, Evolution & Biodiversity) Biology Test sobre Unit 6 : Ecology, Evolution & Biodiversity, creado por cloud.berry el 04/06/2013.
- Autor
- cloud.berry
- Idioma
- English
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