B2 Keywords

Front 1

A characteristic that helps species avoid predation by making it difficult for predators to see them

Back 1

Camouflage

Front 2

A group of a particular species that lives and breeds together

Back 2

Population

Front 3

A group of organisms that can breed and produce fertile offspring

Back 3

Species

Front 4

A highly reactive and damaging form of oxygen high in the atmosphere that protects us from most of the sun's uv radiation

Back 4

Ozone

Front 5

A hybrid obtained by crossing a horse and a donkey

Back 5

Mule

Front 6

A line used to help sample populations across a habitat

Back 6

Transect

Front 7

A living entity

Back 7

Organism

Front 8

A measure of the range of different organisms that live in a particular habitat or ecosystem

Back 8

Biodiversity

Front 9

A particular role or way of life within a specific habitat

Back 9

Niche

Front 10

A relationship between two species where both benefit

Back 10

Mutualism

Front 11

A set of questions designed to allow you to identify a species easily

Back 11

Key

Front 12

A species that obtains food by living in or on other living organisms causing harm in the process

Back 12

Parasite

Front 13

A square grid that can be used to help estimate the size of a population of plants or small animals

Back 13

Quadrat

Front 14

A suction device for sampling small invertebrates

Back 14

Pooter

Front 15

A system of interacting organisms that live together in a particular habitat

Back 15

Ecosystem

Front 16

A type of fat that is liquid at room temperature. Often used by plants to store energy in seeds.

Back 16

Oil

Front 17

All the species that live together in a habitat

Back 17

Community

Front 18

An animal that eats only plants or algae

Back 18

Herbivore

Front 19

An animal that eats other animals

Back 19

Carnivore

Front 20

An animal that eats plants as well as other animals

Back 20

Omnivore

Front 21

An animal that hunts other animals for food

Back 21

Predator

Front 22

An animal that is often hunted for food. Often a herbivore.

Back 22

Prey

Front 23

An animal with a backbone

Back 23

Vertebrate

Front 24

An animal without a backbone

Back 24

Invertebrate

Front 25

An ecosystem that has been constructed or greatly altered by human intervention

Back 25

Artificial (ecosystem)

Front 26

An ecosystem that is largely unaffected by human intervention

Back 26

Natural (ecosystem)

Front 27

An increase in a factor where the rate of increase itself increases with time

Back 27

Exponentially

Front 28

An observable feature of an organism

Back 28

Characteristic

Front 29

Any characteristic of an organism that helps it to survive and breed successfully in its environment

Back 29

Adaptation

Front 30

Arises between individuals or species when there is a shortage of resources

Back 30

Competition

Front 31

Cells need to produce this for growth and repair. All enzymes are examples of this.

Back 31

Protein

Front 32

Changes in species brought about by natural selection in response to variation in populations and changes in the environment

Back 32

Evolution

Front 33

Chemicals and materials in nature that can be used for the benefit of humans

Back 33

Resources

Front 34

Energy storage substances used by plants and animals - also important for insulation in animals

Back 34

Fat

Front 35

Gas produced by respiration that is essential for photosynthesis

Back 35

Carbon dioxide

Front 36

Improvements in the human condition that are achieved without depleting natural resources and biodiversity

Back 36

Sustainable development

Front 37

Light, carbon dioxide or temperature is behaving as this if they restrict the rate of photosynthesis

Back 37

Limiting factor

Front 38

Light-dependent process that produces glucose from carbon dioxide and water

Back 38

Photosynthesis

Front 39

Long-term changes to global weather patterns brought about by the activities of humans

Back 39

Climate change

Front 40

Organisms that are threatened with extinction because of decreasing numbers and habitat loss

Back 40

Endangered

Front 41

Organisms that no longer exist on Earth

Back 41

Extinct

Front 42

Polymer of glucose that is a key component of plant cell walls

Back 42

Cellulose

Front 43

Process requiring oxygen that releases energy from sugars or fats with the production of water and carbon dioxide

Back 43

Respiration

Front 44

Rain with a pH below 6 formed when pollutants such as sulphur dioxide or nitrogen oxides dissolve in it

Back 44

Acid rain

Front 45

Release into the environment of substances that are harmful to living things

Back 45

Pollution

Front 46

Resources that are replaced at the same rate as they are exploited

Back 46

Sustainable resources

Front 47

Simple sugar used for energy by plants and animals. Product of photosynthesis. Can be stored as starch or glycogen.

Back 47

Glucose

Front 48

Species the presence or absence of which provide information on the level of pollution

Back 48

Indicator species

Front 49

Term to describe the preservation of geological time-lines as successive layers in rock

Back 49

Stratigraphy

Front 50

The British scientist who described the mechanism of evolution by natural selection

Back 50

Darwin

Front 51

The naming system for species that involves a genus and species name

Back 51

Binomial system

Front 52

The organism on which a parasite lives and feeds

Back 52

Host

Front 53

The product of a cross between two species - usually infertile

Back 53

Hybrid

Front 54

The storage polymer made by plants from glucose

Back 54

Starch

Front 55

The tendency for the best adapted individuals to survive and pass on their genes to their offspring

Back 55

Natural selection

Front 56

The type of place where a species lives

Back 56

Habitat

Front 57

Trace evidence of long dead organisms. Often mineralised remains or impressions preserved in rocks.

Back 57

Fossil

Front 58

Used to sample small aquatic organisms

Back 58

Dip net

Front 59

Used to sample small ground-living invertebrates

Back 59

Pitfall trap