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Science
Section 3 arthropods
| Question | Answer |
|---|---|
| Arthropods have jointed appendages bilateral symmetry segmented bodies an_________ a body cavity a digestive system with two openings and the nervous system and most species have separate sexes | Exoskeleton |
| Some arthropods have many segments, well others have _____________ segments forming body regions. | Fused |
| A hard, thick, outer covering called an exoskeleton covers, supports, and protects arthropod; it is shed and replaced occasionally in a process called__________ | Molting |
| _____________ have three body regions | Insects |
| An insect's head has a pair of _____________, eys and a mouth | Antennae |
| The _____________ has three pairs of legs; if the insect has wings, they are attached to the thorax | Thorax |
| The abdomen contains reproductive structures and an open circulatory system; insects obtain air and released waste gases through openings called | Spiracles |
| _______________ series of body changes as insects become adults | Metamorphosis |
| ____________ metamorphosis stages, egg, nymph, adult | Incomplete |
| ______________ metamorphosis stages, egg, larva, Pupa, adult | Complete |
| Insects eat plants, blood of animals, nectar, decaying materials, wood, and clothes; mouthparts are diverse and adapted to ________ | Diet |
| Insects are _____________ due to their exoskeletons, ability to fly, rapid reproductive cycles, and small sizes | Successful |
| ____________ such as spiders and ticks have two body regions ( the cephalothorax and abdomen), four pairs of legs, and no antennae | Arachnids |
| ________________ have a sharp, poison filled Stinger at the end of their abdomen | Scorpions |
| Spiders inject their prey with _____________ to digest it | Enzymes |
| ______ and ________ are generally parasites. Ticks often carry diseases | Ticks and miter |
| _____________ and _______________ have long bodies with many segments, many legs, antennae and simple eyes | Millipedes and centipedes |
| __________________ such as crabs, shrimp, and Barnacles have one or two pairs of antennae and mandibles for crushing food | Crustaceans |
| Arthropods are a __________ source, a dagger culture, and are an important part of ecological communities in which humans live. Some arthropods are ________ that carry disease or damage property | Food, pests |
| _______________ can kill insects, but cause other environmental problems. Biological methods for controlling insects are being developed. | Insecticides |
| Some arthropod fossils are more than 500 million years old. Arthropods probably ______________ from a segmented worm ancestor | Evolved |
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Loganbutter