Unit 2 Biology Revision

Front 1

Annuals

Back 1

Plants that germinate, mature and produce seed and then die in one growing season

Front 2

Biennials

Back 2

Plants that live for two growing seasons, germinating and growing in the first and producing seed and dying in the second

Front 3

Closed Forests

Back 3

Type of forest in which the foilage of the upper storey covers 70 per cent or more of the sky (when viewed from below)

Front 4

Competition

Back 4

Interaction between individuals of the same or different species that use one or of the same resources in the same ecosystem

Front 5

Desiccation

Back 5

Drying out

Front 6

Diapause

Back 6

A state of inactivity characterised by low metabolism

Front 7

Dormancy

Back 7

Condition of inactivity resulting from extreme lowering of metabolic rate in an organism

Front 8

Drought

Back 8

Periods of deficiency in rainfall compared with the average

Front 9

El Nino

Back 9

Global weather event, occuring every two to seven years, that produces drought conditions in Eastern Australia

Front 10

Ephemeral

Back 10

Refers to plant species that germinate, grow and produce seed within a short period of weeks

Front 11

Eucalypt Woodlands

Back 11

Major vegetation type dominated by widely dispersed eucalypt trees

Front 12

Extreme Environments

Back 12

Describes environmental conditions in so-called hostile habitats (from a human perspective)

Front 13

Filter Feeders

Back 13

Aquatic organisms that obtain their food by filtering small particles of organic matter or small organisms from water that passes across specialised structures that can trap this food

Front 14

Global Positioning System (GPS) Tracking

Back 14

Method of tracking animals in their habitats through use of a tag fitted to an animal that receives a signal transmitted from a special satellite

Front 15

La Nina

Back 15

Global weather event, occuring every two to seven years that produces conditions of a higher than average rainfall in Eastern Australia

Front 16

Leaching

Back 16

Gradual loss of mineral nutrients from soil when they are dissolved and washed away

Front 17

Micro-environments

Back 17

Conditions in a small region of a habitat

Front 18

Microhabitat

Back 18

Small region within a habitat that may have environmental conditions that differ from those prevailing in the larger habitat

Front 19

Niche overlap

Back 19

Situation in an ecosystem in which different species are in competition for the same energy and space resources; in reality, niche overlap in natural ecosystems is typically zero or minimal

Front 20

Niches

Back 20

Ways of life of organisms in an ecosystem; roles of species in a community

Front 21

Open forests

Back 21

Type of forest in which the foilage of the upper storey covers less than 70 per cent of the sky (when viewed from below)

Front 22

Perennials

Back 22

Plant that continues its growth from year to year

Front 23

Qualitative

Back 23

Refers to a description of an environment in imprecise terms, such as 'warm', 'shady'

Front 24

Quantitative

Back 24

Refers to a description of an environment using numerical values, such as '10 degrees C', '75% cover'