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Ch 15 Scien Test Rev

Chapter 15 Life Science BJU Book B

an animal without a backbone invertebrate
this provides mechanical support for muscle attachment and consistent body shape skeleton
they filter water to obtain food (ex. sponges) filter feeder
are in special cells found in the ectoderm, or outer layer, of jellyfish and similar organisms nematocysts
the organism can be divided into equal halves by any plane along the length of the organism radial symmetry
means that there are 2 equal sides to the animal bilateral symmetry
long, thin nerve cells found throughout the body of an animal or human neurons
a collection of neurons wrapped in protective coverings nerve
is an invertebrates "coordination center" and is sometimes called a simple brain ganglion
something an organism can sense stimulus
a structure that can sense a stimulus and then start an impulse traveling along a neuron sensory receptor
a system where the blood never leaves the blood vessels and just circulates throughout the earthworms body closed circulatory system
helps control the earthworms blood pressure aortic arches
a blood vessel that is very tiny; materials are exchanged between the blood and other body tissues in this capillary
a blood vessel that carries blood toward the heart veins
What is the key characteristic of sponges? Their pores allow water to pass thru their body
What two materials may compose a sponge skeleton? spongin and spicules
What material or substance provides support for an animal that has a hydrostatic skeleton? jelly-like mass; water or some body fluid
In what phylum do jellyfish and coral belong? cnidarian
Name the structure that jellyfish use for stinging. nematocysts
Why do hard corals live in relatively shallow depths? coral have an algae living w/ then & need light for photosynthesis
What kind of symmetry do cnidarians have? radial symmetry
What is the name given to the simple brain of an invertebrate such as a planarian? Ganglion
How does a planarian get rid of its waste products? using flame cells and excretory tubules; indigestible food thru the mouth
Name 3 round worms (genus or common name). Ascaris, hookworms, pinworms or vinegar eels
When an earthworm moves, what structures allow it to hold onto the soil? bristles
What do you call the indigestible soil in food that an earthworm expels as waste? castings
What organ removes waste from an earthworms blood? excretory tubules
How do sponges obtain food? They filter water to obtain food; collar cells help cause the water to flow inward and exit thru the upper opening
If you were to cut thru a large massive hard coral, what would you find? Algae & layers of coral
Describe how a planarian eats. It eats by extending the pharynx thru the mouth and sucking the food into the intestine
Why do we not want pets to have tapeworms? Tapeworms are parasites that affect the animals insides.
Since they do not have eyes, how do night crawlers (earthworms that come out at night) know to retreat into their burrows when a light is shined on them? They have sensory receptors.
How are earthworms beneficial to plant growth? They digest animal matter so that it can be usable for plants to gather nutrients from the soil.
All animals are eukaryotic, multicellular, and have true tissues. True or False. True
True or False - An invertebrate is an animal that has no skeleton False
Is a filter feeder sponge
Nematocysts help a jellyfish ______________________ and _________________ itself. protect / feed
Bilateral symmetry is exhibited by a ______________. planarian
Neurons and ganglia are associated with an animals ________________ system. nervous
Ascaris is a ____________________. roundworm
Which of these is not an organ of the earthworms digestive system? A. excretory tubule B. esophagus C. gizzard D. All are digestive organs excretory tubule
An earthworms blood pressure is controlled by 5 pairs of ______________ _________________. aortic arches
hookworm - Common Name nematoda - Phylum
earthworm - common name annelida - Phylum
coral - common name cnidaria - Phylum
sponge - common name porifera - Phylum
tapeworm - common name platyhelminthes - Phylum
Created by: bgpalmers