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Chapter 4

Science terms and what you need to know.

What are the 3 types of "vores"? (and an example for each) Omnivores, meat and plant eaters (bears, raccoon, humans,etc.) Carnivores, meat eaters(cats,birds, fish,etc.) Herbivores, plant eaters(cow, llama, horse,etc.)
What are the 3 types of symbiosis? Commensalism, when one organism benefits and the other is unharmed.(barnacles on whales) Mutualism, when both organisms benefit.(bacteria and humans) Parasitism, when one organism benefits and one is harmed.(tick)
What is learned and instinctive behavior? Learned: a behavior that is taught by others or learned by one (ex. hunting in packs) Instinctive: a behavior that an organism is born with (ex. flying)
What is physical and behavioral adaptation? Physical: a structural feature. (ex. sharp claws) Behavioral: what it does. Activities that help an animal survive, they can be learned or instinctive. (ex. hibernation for bears)
How do earthworms reproduce? They have both male and female parts. The reproductive organs are located in the clitellum. They need to mate to reproduce. Then, the clitellum forms an egg case/cocoon which protects the eggs.
What are important facts about earthworms? They aerate, allowing air to pass through the soil.Their waste is called castings.They eat soil and the organic material in it including plants, insect parts, and bacteria.Body is covered by a cuticle.They have a prostomium which helps them sense light.
Important facts continued. Brain, hearts, and breathing organs are located in the first few segments of the worm.They have no lungs.Has 5 pairs of hearts. Have a clitellum, enlarged segments on its body, reproductive parts of the worm.They lengthen and shorten themselves. Setae.
What are the characteristics of an arthropod? Invertebrates. Have hard outer coverings called exoskeleton. Segmented bodies. Pairs of jointed appendages. 3 groups of arthropods: Crustaceans:crabs Arachnids:spiders 3rd group: centipedes
What is the fragmentation of a black worm used for? Reproduction.
What is regeneration of a black worm? How they reproduce through asexual reproduction.
What is the difference between endo and exo skeletons? Endoskeleton is an internal skeleton. and an Exoskeleton is an external skeleton.
Created by: tschulz



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