Quiz 10 Flashcards
(32 cards)
What type of symmetry do sponges lack?
Body symmetry
Sponges are asymmetrical.
What type of symmetry do cnidarians possess?
Radial symmetry
Cnidarians have stinging cells and are organized into tissues.
What are the two body forms of cnidarians?
- Polyp
- Medusa
List three characteristics of sponges.
- Asymmetrical shape
- Lack of tissues
- Sessile
What is the primary body cavity in flatworms called?
Gastrovascular cavity
What type of symmetry do flatworms exhibit?
Bilateral symmetry
What are tapeworms known for?
Being parasitic flatworms
How do tapeworms attach to their host?
Using hooks and suckers
What is a key evolutionary adaptation seen in annelids?
Segmentation
What distinguishes roundworms from flatworms and annelids?
They have no body segments
What are the three main parts of a mollusk?
- Muscular foot
- Visceral mass
- Mantle
What type of circulatory system do mollusks typically have?
Open circulatory system
What are the three major classes of mollusks?
- Gastropods
- Bivalves
- Cephalopods
What is the primary feature of arthropods?
Hard exoskeleton
What are arachnids known for?
Being terrestrial carnivores
How many pairs of legs do insects have?
Three pairs
What do echinoderms primarily influence in their ecosystems?
Nutrient cycles
What is the water vascular system in echinoderms used for?
Locomotion, feeding, and respiration
Name the five main classes of Phylum Echinodermata.
- Asteroidea
- Ophiuroidea
- Echinoidea
- Holothuroidea
- Crinoidea
What are the four modern fish lineages?
- Hagfishes
- Lampreys
- Cartilaginous fishes
- Bony fish
What unique feature do cartilaginous fish have?
Endoskeleton composed of cartilage
What allows bony fish to stay buoyant?
Swim bladder
What distinguishes amphibians from reptiles?
Amphibians need to reproduce in water
What are amniotes?
Animals that develop inside the fluid-filled amniotic egg
