Chapter 11 Animal Diversification Flashcards
1
Q
Animals are part of ?
A
Eukarya domain.
2
Q
Humans are ?
A
- animals
- we have eukarya cells
3
Q
What is an animal ?
Three key characteristics.
A
1-animals eat other organism.
2- animals move - at least at some stage on their life cycle (sponge)
3- animals are multi-cellular
- not all animals have heads or eyes.
4
Q
Higher or lower species
A
- no such thing
- two possible states for a species
- extant= currently exist
- extinct = no longer exist
5
Q
All organism to exist do the following.
A
- find food
- escape predators
- reproduce
6
Q
Four key distinctions decide the animals.
A
1- Sponges have no tissue
2- Radial symmetry
3- Gut development
4-How does growth occur
7
Q
Radial symmetry
A
- body structure like a pie.
- jelly fish.
- sea anemone
- slow or free floating
8
Q
Bilateral symmetry
A
- a body with a left and right side
- better at searching for food
- faster moving
- humans , cows , frogs
9
Q
Protostomes
A
Mouth first
10
Q
Deuterostones
A
Anus first (humans)
11
Q
How does growth occur?
A
- Some animals molt
- Arthropods
12
Q
Iverterbrates
A
- animals without a back bone
- most diverse group
- sponges
- arthropods
- cnidarians
13
Q
Sponges
A
- Have no tissue
- simplest of all animals
14
Q
Sessile
A
- attached to a surface
- doesn’t move
15
Q
Cnidarians
A
- poisonous animals
- coral
- sea anemones
- jelly fish
- paralyze pray
- radially symmetrical
