Porifera
What type of symmetry do poriferae have?
Asymmetrical or radial symmetry
What type of symmetry do cnidarians have?
Radial
What are the two most well-known groups of platyhelminthes?
Planarians and tape worms
What are the three main classes of molluscs?
Bivalves, gastropods, and cephalopods.
What kind of symmetry do arthropods have?
Bilateral symmetry.
What are the holes on the outside of their bodies called?
Pores
What do cnidarians eat? (Are they herbivores, carnivores, omnivores, or detritivores?)
Carnivores
Which group contains pinworms, whipworms, and heartworms?
Nematodes
What does the mantle do?
How do arthropods reproduce?
Is their skeleton internal or external?
Internal
What are the two basic body types of cnidarians? Give an example of each.
Polyps (coral) and medusa (jellyfish).
Annelids have bodies that are divided into segments called _____.
Metameres
What do aquatic molluscs use to breathe?
Gills
What are the three common segments their bodies can have?
Head, thorax, and abdomen.
How do porifera reproduce?
Sexually or asexually through fragmentation.
What are cnidoblasts and what do they do?
They are cells that have flagella to inject prey with a paralyzing liquid.
What is cephalization?
When an organism has nerve centers and sense organs in one end of the body.
What is the radula and what does it do?
It is a spiky tongue that allows them to grind food into smaller pieces.
What is metamorphosis?
When a larva changes into an adult.
What is the osculum?
Large hole used to release water and waste.
What does alternation of generations mean?
When an organism has phases of both sexual and asexual reproduction.
What does it mean if an organism is hermaphrodite?
The organism reproduces sexually and produces both male and female gametes. (They can self fertalize.)
How do molluscs reproduce and are they viviparous, oviparous, or ovoviviparous?
They reproduce sexually and are oviparous.
What is molting/ecdysis?
It is when an arthropod loses their exoskeleton and grows a new one, allowing them to grow.