Symmetry
What are the 3 forms of symmetry?
Radial, bilateral, asymmetrical
true or false: sponges are plants
false, they are animals because they cannot produce their own food
What is an animal with a backbone classified as?
Vertebrate
Cnidarians have what form of symmetry?
Radial
What is the key animal we spoke about that is asymmetrical?
Sponges
true or false: sponges have radial symmetry
false: sponges are asymmetrical
this key word means that it remains attached to one place
Sessile
What are the tentacles on a cnidarian called?
nematocytes
Name 3 animals with bilateral symmetry
Humans, lobsters, butterflies, etc.
(any animal that will be the same on both sides when you split it in half will be accepted)
What do sponges use as a defense mechanism?
spicules: sharp, glass like structures
This key word is the vase shaped body of a Hydra
polyp
What are the 2 different body forms of a Cnidarian?
polyp and medusa
Name 4 animals that have radial symmetry
jellyfish, sea anemones, hydra, corals, sea urchins
How do sponges get food
the filter food out of the water as it comes to them (filter feeders)
the action of dividing or splitting something into two or more parts
fission
how do cnidarians get food
they capture their prey with their tentacles
Most sponges that reproduce sexually are ___________. This means that one sponge produces both sperm and eggs.
hermaphrodites
polyp forms of cnidarians, such as hydras, reproduce asexually by ____________.
budding