Unit 3 topic 1 Describing Biodiversity

Question 1

Abiotic Factors

Answer 1

The non-living physical factors that affect an organism’s ability to survive/non-living part of an ecosystem that shapes its environment. (Light, temperature, humidity, pH soil etc.)

Question 2

Biodiversity

Answer 2

The range of living organisms and their environments.
Competition Rivalry between individuals, of the same or different species for a specific resource(s)

Question 3

Disease

Answer 3

An abnormal condition of an organism which interrupts the normal bodily functions that often leads to feeling of pain and weakness, and usually associated with symptoms and signs.

Question 4

Distribution

Answer 4

Regions in which a species is found

Question 5

Diversity

Answer 5

The range of living organisms and their environments.
Diversity indices a quantitative measure that reflects how many different types (such as species) there are in a dataset (a community).

Question 6

Ecosystems

Answer 6

A biological community of interacting organisms and their physical environment

Question 7

Environmental factors

Answer 7

Identifiable element within the environment that affects an organism’s survival, operations, and growth. (e.g., air, water, climate, soil, natural vegetation, and landforms).

Question 8

Organism

Answer 8

An individual animal, plant, or single-celled life form

Question 9

Percentage cover

Answer 9

The percentage of the quadrant area that is covered by one species

Question 10

Percentage frequency

Answer 10

The probability that a species will be found within a single quadrant.

Question 11

Predation

Answer 11

The ecological process in which an animal (or organism) kills and feeds on another animal (or an organism)

Question 12

Relative species abundance

Species interactions The relationships among organisms of different species living in the same location.

Species Richness A measure of the numbers of species present and the evenness of species in relation to one another.
Symbiosis A relationship in which two organisms live in close association over a long period of time.

Answer 12

The number of individuals in a species relative to the total number of individuals in all species within a habitat, ecosystem, or biome.

Question 13

Simpson’s diversity index

Answer 13

The probability that two individuals randomly selected from a sample will belong to different species (or groups).

Question 14

Spatial and temporal scales

Answer 14

Spatial scale is the distance between habitat patches relative to the dispersal distance of the organism. Temporal scale is habitat lifespan relative to the generation time of the organism.

Question 15

Species

Answer 15

Taxonomic group allocated two (genus and specific) names; only members of the same species can produce fertile offspring when mating under natural conditions.

Question 16

Species Diversity

Answer 16

A measure of the number of species found in a community, compared with the number of individuals.

Question 17

Species Evenness

Answer 17

A measure of the relative abundances of species within a community.

Question 18

Species Interaction

Answer 18

The relationships among organisms of different species living in the same location.

Question 19

Species Richness

Answer 19

A measure of the numbers of species present and the evenness of species in relation to one another.

Question 20

Symbiosis

Answer 20

A relationship in which two organisms live in close association over a long period of time.