Arthropod Questions and Answers (Q&A)

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Insects are small terrestrial invertebrates that have an exoskeleton and six legs. They do not have an internal skeletal system, thus the need for an exoskeleton (hard outer shell). They are the largest animal group on earth. It is thought that they make up more than 90% of all animal species...Read More

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There are 4 classes of cheliceriformes: Eurypterids, Merostomata, Pycnogonida, and Arachnida. Eurypterids are a class of water scorpions. However, they are all extinct. They used to be found in freshwater bodies of water and were predators in their environment. A well-known type o...Read More

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Arthropods are a member of a diverse group of animals such as insects, scorpions, spiders, crustaceans, and centipedes. Arthropods have 5 distinguishable characteristics that set them apart from other animals; Exoskeletons, segmented bodies, jointed appendages, bilateral symmetry, and an open...Read More

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A mandibulate is an arthropod with a jaw. The name “mandibulata” literally means “mandibles” or “jaws”. This is a characteristic that defines all members of this arthropod group. All arthropods fall into one of two groups; mandibulates or Chelicerates. The...Read More

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A Chelicerate is an arthropod that that has no distinct head region. Some of the most well-known Chelicerates are sea spiders, arachnids, and horseshoe crabs. Chelicerates all originated as marine animals, most likely during the Cambrian period. Fossil records of Chelicerates have been fo...Read More

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Taeniasis is an infection that is caused by a tapeworm (type of parasite). The tapeworm is a small organism that attaches itself to a host (another living animal) to survive. Taeniasis is specifically an intestinal infection caused by eating beef or pork that has been contaminated with...Read More

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Hello,
I think the question is wrong: crustacea have 2 pairs of antenna so 4 in total

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D. Echinoderms That is the answer for the question

THE END

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Prion is a slow virus. But "slow" does not mean "slow replication". It is not related to replication rate. Progression exists slowly. i think third opsion is false, too.

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