Characteristics of Animals
·
The word animal
comes from Latin word animalis
meaning “to have soul” or “living”
·
In the
evolutionary terms a living organism that is able to reproduce, find food,
repair itself and adapt to its environment.
·
The basic needs
of all animals:
1.
To reproduce
2.
To escape
predation
3.
To be able to
adjust to its environment
Food consumed as a finished product – all
animals are consumersMost invertebrates Some invertebrates and all vertebrates
4 different types of symmetry in animal
kingdom:
Bilateral – eg. Insects, mammals, fish,
etc.
Pentaradial – eg. Sea stars, sand
dollars, etc.
Radial – eg. Sea urchins, Hydra, sea
jellies etc.
Asymmetrical – eg. Sponges