Animal Basics
All animals are made of more than one cell.
What is multicellular?
Animals without backbones.
What are invertebrates?
Arthropods have this type of skeleton.
What is an exoskeleton?
Birds are unique because they have this trait.
What are feathers
A chordate with no backbone is called this.
What is an invertebrate chordate?
This protein holds animal cells together since they do not have cell walls.
What is collagen?
These simple animals filter water for food and cannot move as adults.
What are sponges?
True/False: A ladybug is an arthropod.
True
The main difference between vertebrates and invertebrate chordates is:
the presence of a backbone
This symmetry allows an organism to be divided into two mirror halves.
What is bilateral symmetry?
These two types of cells allow animals to move and respond to stimuli.
What are muscle cells and nerve cells?
These hollow-bodied animals have tentacles with stinging cells.
What are cnidarians?
Arachnids have this many pairs of legs.
What is four pairs?
Humans have this type of skeleton.
What is an endoskeleton?
. An earthworm has which type of skeleton?
What is hydrostatic skeleton
These four traits are found in all chordates at some point in their life.
What are notochord, nerve cord, tail, and pharyngeal pouches?
This group includes snails, clams, and octopuses and has a mantle.
What are mollusks?
Provide 4 examples of Arthropods.
insects (beetles, flies), arachnids (spiders, scorpions, mites), crustaceans (crabs, lobsters, shrimp), and myriapods (centipedes, millipedes)
These worms have segmented bodies and heart-like structures.
What are segmented worms (annelids)?
This flexible rod supports a developing chordate.
What is a notochord?
These special cells can inject poison into animals that come in contact with them.
Nematocysts
Cnidarians have _______symmetry.
What is radial?
Most insects smell using these structures.
What is antennae?
This structure connects a developing mammal to its mother.
Answer: What is the placenta?