Chapter 15-16 Flashcards
An organism that is permanently attached to the ground is…
Sessile
What is the study of the animal kingdom called?
Zoology
Organisms with systems of tough plates protecting them have a/an
Exoskeleton
The upper surface or “backbone” side of an animal is the
Dorsal
The underneath side or lower surface is the
Ventral
The term lateral refers to an organism’s
Side
The caudal region of an organism would be its
Tail
An organism whose midline divides the organism into two equal lateral segments is said to have
Bilateral symmetry
Animals without backbones are called
Invertebrates
The ability to regrow damaged or missing parts is called
Regeneration
The only Phylum to have spearlike nematocysts is
Cnidaria
Platy- means
Broad flat
The type of symmetry illustrated by the earthworm is
Bilateral???
A muscular throat cavity is a
Pharynx
Three cells layers and a single opening to the digestive system are characteristic of what phylum
Platyhelmintes
What are the differences between free-living and parasitic flatworms?
Hooks and suckers, compared to teguments?????
An organism that possesses both male and female reproductive organs is
Hermaphroditic
What is the tegument?
Protective body covering
The anterior end of the tapeworm is called the
Scolex
What factors contribute to the spread of hookworm?
Bare feet, warm soil poor sewage management
Name harmful parasitic roundworms.
Hook worm
Which parasitic worm forms larval cysts in the human muscle tissue?
Trichina
The body sections of the tapeworm are called
Proglottids
The body type of the nematoda is
Round cylindrical
