Chapter 17 Biology

26 terms by alligordon15 

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porifera

These are sponges that are sessile and asymmetrical
and are made up of collagen and sphericals

porifera

can regenerate and are hermaphrodites

cnidarians

these have 2 body types and only one opening

polyp

1 type of cnidarian that is a sessile hydra

medusa

1 type of cnidarian that is motile and is a jellyfish

cnidarians

can perform both asexual and sexual reproduction (process called budding), possess cnidocytes (stinging cells) and has a nervous system (nerve net)

cnidarians

have a sac gut
the only invertebrate with radial symmetry

flatworms

are Platyhelminthes that are parasites (found in host cells)

flatworms

have a central/advanced nervous system,an eye spot, bilateral structure and are hermaphrodites

roundworms

AKA Nematodes:
sexual reproduction only
2 openings (complete digestive tract)

annelids

earthworms/leeches: segmentation
esophagus, pharnyx, crop & gizzard
with 2 openings

annelids

closed circulatory system (and have a heart)
ventral nerve cord
have sensory antennae (more advanced nervous system)

arthropods

crabs and insects:
have an exoskeleton made of chitin (for support)
has 3 separate body regions: head, thorax and abdomen

arthropods

has book lungs and external gills with an open circulatory system

dorsal

back

ventral

front

anterior

top

posterior

bottom

flatworms

which type has an eyespot?

annelids

which type has a closed circulatory system?

arthropods

which type has an open circulatory system?

cnidarians

which were the first to become motile?

cnidarians

which type has stinging cells?

sessile

cannot move

animal

which kingdom?
· Heterotrophs (never photosynthetic)
· Eukaryotes
· Multicellular
· Sexual Reproduction
· Gas exchange
· Inverts- verts (no backbone)

cnidarians

everything has bilateral symmetry EXCEPT?

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