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40 Cards in this Set
- Front
- Back
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Basic unit of all living things
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cells
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A group of tissues working together
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tissue
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different tissues working together
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organs
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A trait or behavior that helps an organism survive
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adaptation
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a group of organs working together make up a ___
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system
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A tissue is made up of similar ______ working together
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cells
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a sperm cell and an egg cell joining
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fertilization
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animals with a backbone
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vertebrates
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animals without a backbone
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invertebrates
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4 functions of all animals
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get food and oxygen
keep conditions stable move reproduce |
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______ reproduction makes a new organism from the joining of two sex cells
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sexual
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reproduction where one cell (or organism) splits into two
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asexual
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The animal kingdom is broken down into 35 _______
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phyla
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Which group (vertebrates or invertebrates) contain the most animals?
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invertebrates
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how are animals classified
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by body structure, DNA and te way it develops
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the balance of body parts is called ___________
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symmetry
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which type of symmetry is found in worms?
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bilateral
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which type of symmetry is found in sponges?
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asymmetry (none)
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Which type of symmetry do starfish have?
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radial
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What type of symmetry is it if an organism can be divided into two equal halves?
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bilateral
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Which phylum do sponges belong in?
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Porifera
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Which phylum do jellyfish belong in?
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Cnidarians
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What is the key trait of all sponges?
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a body full of pores (holes)
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What cells do sponges used to capture food?
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collar cells
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An immature form of an animal is called a ______
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larva
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What do jellyfish use to capture prey?
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stinging cells
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When a cnidarian is attached to one place and is in the shape of a vase, it is called a _____.
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polyp
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The free floating, bowl-shaped form of a cnidarian is called a _______________
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medusa
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Which group of organisms do coral belong to?
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cnidarians (polyp)
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What are the three types of worms?
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flatworms, roundworms, segmented worms
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Which group of worms do tapeworms belong to?
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flatworms
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Which type of symmetry does an organism have if it has a head and a tail end?
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bilateral
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The simplest organisms with a brain are ______
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worms
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An organism that lives in or on another organism is called a ______
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parasite
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The organism that a parasite lives in or on is called the _________
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host
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Describe a closed digestive system
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has only one opening-food enters and wastes leave through that opening
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Describe a one way digestive system
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two openings-joined by a tube (food enters one end and leaves through the other)
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Describe a closed circulatory system
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blood stays within blood vessels at all times.
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The opening at the end of a one way digestive system is called an __________
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anus
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How do earthworms help the soil?
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-loosen the soil, make it more fertile when they release wastes
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