Chapter 7 Flashcards
Large hole at the top of a sponge
Osculum
When one organism lives on or in another without harming it
Symbiosis (commensalism)
Sponges live in what two environments
Marine and Fresh Water
Animals that strain their food from the water are
Filter feeders
The term for organisms that are attached to a substrate
Sessile
Cnidarians get their name from what type of cell
Cnidoblasts; Cnidocytes (nematocysts)
The sessile stage in the lifecycle of a jellyfish
Polyp
Two causes of coral bleaching
Sedimentation & global warming
The symbiotic dinoflagellate algae that lives in coral polyps and the two things the produce
Zooxanthellae: Food & Oxygen
Process by which these organisms repair/replace body parts
Regeneration
Organisms that obtains its food by living in or on the body of another (it’s host).
Parasite
Movement in Echinoderms is accomplished by
Tube Feet
To possess both male and female sex organs and be able to produce eggs and sperm
Hermaphrodite
Material that arthropods exoskeleton is made of
Chitin
The process of molting is related to the live function of
Growth
Shrimp-like animals that baleen whales and fish thrive on
Krill
Feathery appendages of a barnacle used to obtain food
Cirri on legs
Two main body segments of these bilaterally symmetrical crustaceans
Cephalothorax & Abdomen
The membrane that lines the inside of mollusk shells and produce calcium carbonate
Mantle
Protein fibers produced by mussels for attachment to a substrate
Byssal threads
The name of the toothed structure used by Gastropods to feed
Radula
Pigmented cells that enable the squid and octopus to change colors
Chromatophores
The mollusk without a shell that evolved toxicity as a defense
Nudibranch
What group has a simple body plan made up cells that are not complex tissues
Sponges
A group with radial symmetry and consists of sea anemones, jellyfish, and coral
Cnidaria
What is the specific name for the form Cnidarians can take in the “sessile” life stage
Polyp
What is the name for the “stinging cells” Cnidarians use to help capture prey
Nematocysts
Which layer of cells form the outer body wall of Cnidarian
Epidermis
Which phylum consists of animals that have a basic body plan, a mantle, and a set of radula
Mollusks
Which class of mollusk is characterized by having a stomach foot
Gastropods
Which Cephalopods have eight arms, two tentacles, and an internal shell
Cuttlefish
Animals with segmented, bilaterally symmetrical bodies, jointed appendages, and exoskeletons
Arthropods
What is the name for the gelatinous, narrow middle layer that does not contain cells
Mesoglea
A type of hydrozoan that is actually a float made of a drifting colony of polyps
Siphonophores
Which class of Cnidaria consists of the most dangerous animals known (box jellyfish)
Cubozoa
An animal that has ciliary combs, radial symmetry, and tentacles with no stinging cells
Comb jellyfish
What is the name for a long, fleshy tube used by ribbon worms to entangle prey
Proboscis
Which type of worm has a symbiotic relationship with bacteria
Beard Worms
What is the name for a ribbon of small teeth used by mollusk in feeding
Radula
What has a set of tentacles arranged in a horse-shaped, circular, or coiled fashion
Lophophore
Which animals superficially resemble true spiders and use proboscis to capture prey
Sea spiders
Which phylum actually means “spiny-skinned” and consists of sea star and sea cucumbers
Echinodermata
Echinoderms that have a round, rigid, she’ll-like body with movable spines and eat seaweeds
Sea Urchins
What is the name for the defense mechanism used by sea cucumbers
Evisceration
An Echinoderm that uses its arms for moving and has tube feet that lack suckers
Brittle stars
What is the name of the body cavity made from the mesodermic tissue get complex animals
Coelem
What organisms filter food particles from the water by pumping water through their bodies
Filter feeder
What have only three pairs of legs and tend to live at the sea’s edge as scavengers
Insects
What is the name for an external skeleton secreted by the underlying layer of tissue
Exoskeleton
What is the common name for the chordates without backbone
Protochordates
What is the ability to grow lost or damaged body parts, as seen in Echinoderms
Regeneration
The name of Porifera cells that, with their flagella, create an inward current
Choanocytes
