Test 3 From Practice Tests Flashcards
The phylum ___ live in water, are sessile, and have choanocytes.
Porifera
All animals are multicellular and ___.
Heterotrophic
Cnidarians occur in two basic body forms: polyp and ___.
Medusa
Stationary mobilia have feeding polyps and ___ polyps.
Reproductive
The gastrovascular cavity of a Hydra has how many openings?
One
Unique to Cnidaria are specialized stinging cells called ___.
Nematocysts
Flatworms belong to what phylum?
Platyhelminthes
Planaria is ___, which means they possess both male and female sex organs.
Hermaphroditic
What organ of the planaria reminded early investigators or a flickering candle?
Flame cells
Tapeworms have a hook and sucker structure called a __.
Scolex
___ are animals that have a body cavity completely lined with mesoderm.
Celomates
Loligo belongs to which phylum?
Mollusca
How many parts does the squid have?
Three
Is the circulatory system of the squid open or closed?
Closed
When observing the external anatomy of the earthworm, the enlarged section is called a ___.
Clitellum
The earthworm is a scavenger and feeds on ___.
Detritus
Earthworms are sexual ___.
Hermaphrodites
Our incision was made along what surface of the earthworm?
Ventral
Arthropods have paired, jointed appendages and hard exoskeletons that contain ___.
Chitin
Crayfish belong to the phylum Arthropoda, class __.
Crustacea
Five things that go across the heart in the earthworm.
Aortic arch
Animals we’ve been examining since last test.
Protostomes
Echinoderms are classified as ___.
Deuterostomes
Clam part used for locomotion.
Foot
How are crayfish and grasshoppers related?
They are Arthropods
Echinoderms exhibit ___ symmetry.
Radial
Ecdysis refers to ___ in Arthropods.
Molting
___ refers to often, drastic change in form and shape.
Metamorphosis
Lab book states chordates have four parts, name two
- dorsal tubular nerve cord
- notochord
- postnatal tail
- pharyngeal pouches that become hill slits
