4 functions of animals
What is the first main function of animals?
Obtaining food and water
What is a polyp?
One of the body plans for cnidarians. Vase-shaped. Mouth on dorsal side.
How many species of sponges are there?
9,000
What is the first animal phylum?
Porifera/have pores
what is radial symmetry?
Many lines that all go through central point.
- No anterior or posterior.
- All live in water.
What are the 3 ways animals can eat?
Herbivores
Carnivores
Omnivores
What is a medusa?
One of the body plans for cnidarians. Umbrella or bowl shaped. Mouth on ventral side.
How are sponges classified?
By spicules
What is the third animal phylum?
Platyhelminthes/flat worms
What is bilateral symmetry?
One line divides the organism into two mirror halves.
- Complex
- Anterior and posterior
What is the second main function of animals?
Keeping conditions stable (homeostasis)
What are three examples of Cnidarians?
Jellyfish, coral, sea anemones, and hydra
What are collar cells?
Move water to trap food
What is the forth animal phylum?
Nematoda/round worms
What body symmetry are Porifera?
None
What is the third main function of animals?
Movement
How do Cnidarians catch their prey?
By using their stinging cells to stick venom in the prey making it unable to move.
What are they the ancestor of?
Ancestor of all animals
What is the sixth animal phylum?
Mollusca / soft bodied
What body symmetry are Cnidarians?
Radial
What is the forth main function of animals?
Reproduction
Where is their food digested?
In the central body cavity
What type of organism were they once classified as?
Plants
What is the eighth animal phylum?
Chordata/ notochords
What symmetry is the phylum Chordata?
Bilateral