What am I?
My characteristics include heterotrophic, lungs or gills, movement, open or closed circulation, sexual or asexual reproduction. What am I?
Animal
Cnidarians exhibit these two body forms: one sessile and the other mobile.
polyp and medusa
sponges
Porifera
earthworm, leech, and clam worm
Anellida
Some reptiles bear live young, but the young have no placental connection to their mother.
ovoviviporous
All members have endoskeletons with a backbone. What are we?
vertebrates
What do the tapeworm, hookworm, and leech all share in common besides being worms?
all are parasitic
jellyfish, sea anemones, corals, and hydras
Cnidaria
Ascaris, trichina, and hookworms
Nematoda
Animals that regulate their body temperatures through behaviors such as sunning themselves.
endothermic
Many in this group are covered by an external skeleton (exoskeleton) and all are ectothermic. What are we?
Invertebrates
A structure used by clams to filter water and used by the octopus to "jet" through the water.
siphon
bivalves, gastropods, and cephalopods
Mollusk
tapeworms, flukes, planarial worms
Platyhelminthes
The opening where water enters the echinoderms water-vascular system is a sieve-plate called the _?_.
madreporite
The unique members of this phylum have a body riddled with "pores" and are sessile as adults. What are we?
Sponges (poriferans)
Worms with a coelom, worms with a pseudocoelom, and worms without either.
segmented worms, roundworms, and flatworms
brittle stars, sea stars, sea cucumbers, sea urchins, and sand dollars
Echinoderms
Type of reproduction in worms that allows them to regenerate if dismembered.
Asexual reproduction
The interior space of a hydra or other cnidarian.
gastrovascular cavity
Don't touch or I might have to sting you with specialized cells called cnidocytes which contain nematocysts. What am I?
Jellyfish (cnidarian)
A concentration of sensory and nerve cells at the anterior end of an organism.
cephalization
flatworms
Platyhelminthes
Worms are sometimes neither male or female, but both.
hermaphroditic
The protozoans, algae, and drifting larval forms of many invertebrates like molluscs and sponges found in the ocean.
plankton