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IBD Biology (Unit 6 : Ecology, Evolution & Biodiversity) Quiz on Unit 6 : Ecology, Evolution & Biodiversity, created by cloud.berry on 04/06/2013.

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Unit 6 : Ecology, Evolution & Biodiversity

Question 1 of 34

1

Ecology is the study of..?

Select one of the following:

  • Living things in their environment.

  • Organisms in their unnatural habitats

  • Ecosystems

  • Plants and the competition they face

Explanation

Question 2 of 34

1

An Ecosystem is..?

Select one or more of the following:

  • A community of organisms and their surroundings

  • The environment in which organisms live and with which they interact

  • Community of predators only

  • Acommunity of plants and prokaryotes

Explanation

Question 3 of 34

1

The organisms (community) of an ecosystem are called the ____ component & the physical environment is known as the ____ component.

Select one of the following:

  • Biotic | Abiotic

  • Abiotic | Biotic

  • Abiotic | Antibiotic

  • Biotic | Antibiotic

Explanation

Question 4 of 34

1

A Habitat is..?

Select one or more of the following:

  • The locality in which an organism occurs.

  • Where the organism is normally found

  • Where the organism lives

  • Where the organism has a nest

  • Where the organism has died

Explanation

Question 5 of 34

1

The population is..?

Select one of the following:

  • All the living things of the same species in a habitat at any one time

  • All the living things in a habitat at any one time

  • All the different species in an ecosystem atr any one time

Explanation

Question 6 of 34

1

A community is..?

Select one or more of the following:

  • All the living things in a habitat or ecosystem

  • The total of all the populations of an ecosystem

  • All the living things of the same species in a habitat at any one time

Explanation

Question 7 of 34

1

Traits of organisms of the same species are..?

Select one or more of the following:

  • A group of individuals with common ancestry

  • Capable of interbreeding to produce fertile offspring

  • Incapable of interpbreeding to produce fertile offspring

  • Capable of interbreeding to produce only infertile offspring

Explanation

Question 8 of 34

1

An autotroph is an organism that :

Select one of the following:

  • Synthesises its organic molecules from simple inorganic substances

  • Synthesises its organic molecules from complex inorganic substances

  • Synthesises its inorganic molecules from simple organic substances

  • Synthesises it organic substances from simple inorganic molecules

  • Feeds itself

Explanation

Question 9 of 34

1

A heterotroph is an organism that :

Select one of the following:

  • Obtains organic molecules from other organisms

  • Synthesises its organic molecules from simple inorganic substances

Explanation

Question 10 of 34

1

Saprotrophs are..?

Select one of the following:

  • Organisms that feed on dead plants and animals, and on the waste matter of animals

  • Organisms that feed on dead plants but not animals or their waste matter

  • Organisms that synthesise their own organic molecules from simple inorganic substances

  • Organisms that obtain organic molecules from other organisms

Explanation

Question 11 of 34

1

Saprotrophs are known as..?

Select one or more of the following:

  • Detrivores

  • Decomposers

  • Herbivores

  • Carnivores

  • Composers

  • Producers

Explanation

Question 12 of 34

1

The trophic level is..?

Select one of the following:

  • The level at which an organism feeds in a food chain (it feeding level)

  • The level at which an organism is consumed in a food chain

  • The amount of predators an organism has in a food chain

  • The amount of alternative sources of food an organism has in a food web

Explanation

Question 13 of 34

1

The 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 __ .

Select one of the following:

  • 1 | 2 | 3 | 4 | 5

  • 5 | 4 | 3 | 2 | 1

Explanation

Question 14 of 34

1

Food chains tend to be fairly short because :

Select one of the following:

  • Energy lost at transfer between trophic levels means few (transfers) can be sustained for long

  • Energy is lost through death too quickly

  • There are not enough plants in ecosystems

Explanation

Question 15 of 34

1

Gases in the atmosphere that ____ infra red radiation are referred to as green house gases.

Select one of the following:

  • Absorb

  • Reflect

  • Combine with

  • Repel

Explanation

Question 16 of 34

1

The precausionary principle is..?

Select one or more of the following:

  • When an activity raises threats of harm, measures should be taken, even if a cause-and-effect relationship has not been established scientifically.

  • Better safe than sorry !

  • Better late than never !

  • Whe an acivity raises threats of harm, measures shoudn't be taken, unless a cause-and-effect relationship has not been established scientifically.

Explanation

Question 17 of 34

1

List the following in chronological order : __ , __ , __ and __ phase.

Select one of the following:

  • Lag | Exponential Growth / Log | Linear Growth | Plateu / Stationary

  • Plateu | Exponential Growth / Log | Linear Growth | Lag

  • Exponential Growth / Log | Lag | Linear Growth | Plateu

Explanation

Question 18 of 34

1

Evolution is..?

Select one of the following:

  • The process of cummulative change in the heritable characteristics of a population.

  • The occurance of mutations in the ehritable characteristics of a population.

  • The process of cummulative change in the non-heritable characteristics of a population.

  • The process of cummulative change in the heritable characteristics of a ecosystem.

Explanation

Question 19 of 34

1

Examples of Bryophyta are :

Select one or more of the following:

  • Liverworts

  • Moss

  • Flowering Plants

  • Conifers

  • Ferns

Explanation

Question 20 of 34

1

Examples of Filicinophyta :

Select one or more of the following:

  • Ferns

  • Flowering Plants

  • Liverworts

  • Moss

  • Conifers

Explanation

Question 21 of 34

1

Examples of Coniferophyta :

Select one or more of the following:

  • Conifers

  • Moss

  • Liverworts

  • Flowering Plants

  • Pine Trees

Explanation

Question 22 of 34

1

Examples of Angiospermophyta :

Select one or more of the following:

  • Flowers

  • Grass

  • Moss

  • Liverworts

  • Conifers

  • Ferns

Explanation

Question 23 of 34

1

Examples of Porifera :

Select one of the following:

  • Sponges

  • Flatworms

  • Snails

  • Molluscs

  • Insects

  • Arachnids

Explanation

Question 24 of 34

1

Examples Of Cnidaria :

Select one or more of the following:

  • Jellyfish

  • Flatworm

  • Snail

  • Sponge

  • Insects

Explanation

Question 25 of 34

1

Examples of Platyhelminthes :

Select one of the following:

  • Flatworms

  • Molluscs

  • Jellyfish

  • Insects

  • Snails

Explanation

Question 26 of 34

1

Examples of Nematoda :

Select one of the following:

  • Roundworm

  • Snails

  • Aracnids

  • Sponges

  • Jellyfish

Explanation

Question 27 of 34

1

Examples of Mollusca :

Select one or more of the following:

  • Snails

  • Molluscs

  • Sponges

  • Flatworms

  • Jellyfish

Explanation

Question 28 of 34

1

Examples of Anthropoda :

Select one or more of the following:

  • Aracnids

  • Insects

  • Crustaceans

  • Sponges

  • Flatworms

  • Molluscs

Explanation

Question 29 of 34

1

Pyramid of energy shows the flow of energy in a food chain.

Select one of the following:

  • True
  • False

Explanation

Question 30 of 34

1

Radiant 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.

Select one of the following:

  • True
  • False

Explanation

Question 31 of 34

1

Naturally occurring greenhouse gases include:

Select one or more of the following:

  • Phosphate

  • Methane

  • Water Vapour

  • Phosphorous

  • Carbon dioxide

  • CFCs

Explanation

Question 32 of 34

1

As a population increases, environmental resistance occurs i.e space and resources increase, and competition decreases.

Select one of the following:

  • True
  • False

Explanation

Question 33 of 34

1

Intense cold is an example of a density-independent factor.

Select one of the following:

  • True
  • False

Explanation

Question 34 of 34

1

Natural selection can essentially be described as 'survival of the fittest'.

Select one of the following:

  • True
  • False

Explanation

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