4th Form Definitions And Key Concepts

Question 1

Population

Answer 1

The total number of individuals of one species in a particular habitat at a particular time.

Question 2

Community

Answer 2

An interacting group of various species in a shared/common location/ that live within a habitat.

Question 3

Habitat

Answer 3

The places where specific organisms live.

Question 4

Ecosystem
ACOLO,NLTATSE

Answer 4

A community of living organisms (animals, plants, micro-organisms), non living things and their shared environment.

Question 5

Consumer

Answer 5

Organisms which eat other living things (e.g. animals)

Question 6

Producer

Answer 6

Organisms which make their own food (e.g. photosynthesising plants)

Question 7

Quadrat
AFUIETMTSOAPIAH

Answer 7

A frame used in ecology to measure the size of a population in a habitat

Question 8

Excretion

Answer 8

The removal of metabolic waste products (and substances that are toxic or in excess)

Question 9

Osmoregulation

Answer 9

The process of maintaining water and salt concentrations (osmotic balance) across membranes within the body

Question 10

Trophic levels

Answer 10

Position an organism occupies within feeding sequence

Question 11

Primary consumer

Answer 11

Herbivores that feed on Plants (Producers)

Question 12

Secondary consumer

Answer 12

Predators that feed on primary consumers

Question 13

Tertiary consumer

Answer 13

Predators that feed on secondary consumers

Question 14

Decomposers
OTRDE ODO ON-LOMFE

Answer 14

Organisms that release digestive enzymes on dead organisms or non-living organic matter for energy