Poriferans, Cnidarians & Worms, Molluscs & Echinoderms
This muscular structure helps a mollusc move.
What is the foot?
Fish use these to breathe underwater.
What are gills?
All arthropods have this hard outer covering.
What is an exoskeleton?
Reptiles are covered in this dry, protective body covering.
What are scales?
this feature, found in most mammals, helps maintain body temperature.
What is fur or hair?
The mantle in molluscs produces this protective outer covering.
What is the shell?
This organ helps most fish control their buoyancy.
What is the swim bladder?
This body feature gives arthropods their name, meaning “jointed foot.”
What are jointed appendages?
Unlike amphibians, reptiles reproduce without needing this environment.
What is water?
Mammals feed their young using milk produced by these glands.
What are mammary glands?
This type of symmetry is found in jellyfish and sea anemones.
What is radial symmetry?
Amphibians begin life in water and later undergo this major body change.
What is metamorphosis?
Insects have this number of legs.
What is six (three pairs)?
Birds maintain a constant body temperature, making them this type of animal.
What are endotherms?
Most mammals give birth to live young, making them this type of animal.
What are viviparous animals?
These porous animals live attached to surfaces and filter food using choanocytes.
What are poriferans (sponges)?
Adult amphibians can breathe through their lungs and through this body surface.
What is the skin?
Spiders belong to this arthropod group.
What are arachnids?
These lightweight bones help birds fly.
What are hollow bones?
Humans belong to this group of mammals known for grasping hands and large brains.
What are primates?
Sea urchins and sand dollars belong to this group of echinoderms.
What are echinoids?
Frogs and toads belong to this amphibian group.
What are anurans?
Crabs and lobsters belong to this arthropod group that usually lives in water.
→ What are crustaceans?
Birds that cannot fly, such as ostriches, are called this.
What are ratites?
This type of mammal group includes humans and is characterized by development inside a placenta.
What are placental mammals?