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20 Cards in this Set
- Front
- Back
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producer/autotroph
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extract energy and nutrients from nonliving environment. some plants and microbes.
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consumer/heterotroph
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eat other organisms for nutrients. humans and other animals.
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decomposer
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obtain energy from wastes or dead organisms. fungi and many bacteria.
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population density
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number of individuals of a species per unit area or unit volume of a habitat.
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consumption
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herbivores eat plants. predators eat prey.
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pyramid of energy
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represents each trophic level as a block whose size is directly proportional to the energy stored in new tissues per unit time. explains why food chains rarely extend beyond 4 levels. explains why world's largest animals have been herbivores.
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kingom fungi
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eukaryotic, cell wall is chitin, haploid and diploid
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what are the 4 distinguishing features all chordates have at some point?
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1. notochord
2. dorsal, hollow nerve chord 3. pharayngeal pouches or slits 4. tail that extends beyond anus |
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ostrachoderms
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jawless fish
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chondrichthyes
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jawed fish
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lifecyle of sperm
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testes made sperm, then discharge sperm into the epididymis, the first structure in the duct system. other passageways include the was deferens, ejaculatory duct, and the urethra (the tube that connects the bladder to the outside of the body).
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where does fertilization occur in a woman?
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uterine tube
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what is homologous to the penis?
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vagina
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what is the muscle sac in a woman?
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uterus
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who believed life existed in 3 forms?
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woese - eubacteria, archaea, and eukarya
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central nervous system
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integrates sensory information and coordinates body's responses - brain and spinal cord
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amphibia
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"double life" (part water and part land), retain strong link to water. ex: frogs and toads (young metamorphasize); salamandors (tail and 4 legs); caecilians (giant earthworms)
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characteristics of aves?
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endothermic, only animals with feathers, 4 chambered hearts. ex: birds
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endoderm
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digestive tract and derived organs
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porifera
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assymetrical, asexually reproduce, lack digestive tract. ex: sponge
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