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Bio unit 8 BEHS

QuestionAnswer
Radial symmetry A body can be divided in half many ways through a central axis
Bilateral symmetry A body can be divided lengthwise to produce a right and left half Most common
Asymmetry No symmetry, least common
Acoelomate Animals with no body cavity (bodies are flat & solid)
Coelomate Animal with body cavity Humans
Pseudocoelomate Fake coelom no tissue on inside, just fluid
Sessile Non-moving aquatic animals
Filter feeders Filter and absorb into their cells plankton in the water in
Gastrovasular pouch Inner space for digestion
NematoCysts & cnidocytes Stinging cells that poison prey to defend themselves
Polyp Tube shaped body with tentacles, non-moving
Medusa Umbrella shaped with tentacles mobile, moving
Pharynx To begin digestion outside of body
Closed circulatory system All blood contained within blood vessels
Setae Briste-like hairs for movement
Clitellum Thick band that can be shed to serve as pouch for eggs
Arthropods Jointed foot
Molting Process of shedding exoskeleton
Open circulatory system Body fluids like blood are not contained within blood vessels Blood bathes organs
Classes of arthropods Arachnid Crustaceans Centipedes Millipedes Insects
Spericals Opening in side leading to tracheal tubes
Tracheal tubes For breathing
Compound eyes Many lenses
Antennea 1pair
Mandibles Used for chewing
Tongue Used for lapping up nectar
Probscis Percing Mosquitoes
Metamorphosis Changes in body form
Complete meta Egg, larva, pupa, adult. (4)
Incomplete meta Egg, nymph, adult (3)
Mimicry Nonpoisonous species resemble poisonous species
Camouflage We know this
Created by: Mandy898989
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