Apologia Biology module 12 study guide – Flashcards
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What are the five common characteristics of Arthropods?
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Exoskeleton, Body Segmentation, jointed appendages, ventral nervous system, and an Open circulatory system.
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In order to grow Arthropods must do what?
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Molt
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An Arthropods body has what three segments?
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Head, Thorax, and abdoman
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If the Arthropod is made up of two segments what are they?
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cephalothorax and abdoman
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Where does the Crayfish get its sense of balance?
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antennule and the statocyst
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Where does the Crayfish get its sense of taste and touch from?
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Antennae
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What does the Crayfish use to grab prey and for defense?
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chelipeds
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What does the Crayfish use for swimming?
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Swimmerets, telson, and uropods
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What does the Crayfish use for both swimming and reproduction?
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Swimmerets
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What purpose does the Green gland serve?
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It cleans the blood
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What happens to a crayfish losses a limb?
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The crayfish uses it double membrane to seal the wound and regenerate the missing appendege.
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Where do the fertilized eggs of a crayfish go?
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They attach to the Swimmerets six weeks before hatching.
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The crayfish's brain is composed of what two parts?
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ganglia and nerve chord
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Explain the flow of blood in a crayfish?
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It collects in the pericardial sinus around the heart: enter the heart through one of three openings which close when the heart is ready to pump; The heart pumps blood through the blood vessels which in turn sends the blood into various body cavity. gravity causes the blood to go into the sternal sinus where it is collected by blood vessels that are open at one end. they carry the blood back to the pericardial sinus where it passes though the gills release carbon dioxide and get oxygen: finale blood passes through the green gland to be cleaned.
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Explain the process of digestion
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It uses its mandivals to break up food which enters the esophagus and goes into the two regions of the stomach. The first region grinds the food and the second region sorts the particals. If the particals are small enough they go to the digestive glands to compleate the digestive process, if they are to large they are sent to the intersine and expeled out of the anus.
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Explain purpose of the fist region of the stomach
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To grind food up into fine particles
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Explain the purpose of the second region of the stomach
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To sort the particals
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What 5 characteristics set arachnids apart from other arthropods?
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cephalothorax, head, 4 pairs of walking legs, no antenna, simple and compound eyes
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What 4 characteristics set insects apart from the other arthropods?
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head,thorax and abdomen; 3 pairs of walking or jumping legs; 1 pair of antenna; wings at some point in their life.
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What are the 4 stages of complete metamorphosis?
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egg, larva, pupa, adult
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What are the 2 differences between an nymph and an adult insect?
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a nymph lacks wings and reproductive organs
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What takes the place of the respiratory system in an insect?
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A system of tracheaes that run through out their body.
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If an insect has two membranous wings and 2 membranous balancers, what order does it belong?
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the orthoptera order
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If an insect has horny wings, what order does it belong?
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the coleoptera order
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If an insect has membranous wings & lives in a society with a specific function, what order does it belong?
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the hymenoptera order