Polymorphism

Dimorphism

Trimorphism

Metamerism

All the animals of a place

All the animals and plants found in an area

Human being living in an area

Animals/plants of a species living in a specific area

Higher in rank than a population

Higher in rank than a species

Intermediate between local population and species

Subordinate in rank to local population

Dichogamy

Dimorphism

Bisexuality

Monoecious  nature

Genetically different but phenotypically similar

Genetically similar but ecologically different individuals

Genetically adapted ecological race

Genetically and phenotypically disimilar members of different species ecologically adapted to an area

Rat

Deer

Swan

Hamster

Deer

Seal

Fox

Hamster

1.4 m

2.2 m

1.2 m

1.6 m

Natural hybrid between lion and tigress

Natural hybrid between tiger and lioness

Fertile hybrid between captive lion and tigress

Fertile hybrid between captive tiger and lioness

Autecology

Synecology

Community ecology

Palaeoecology