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Ch 15 Scien Test Rev
Chapter 15 Life Science BJU Book B
| Question | Answer |
|---|---|
| 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
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