What is an Arachnid? - Definition, Characteristics & Anatomy


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What larger group of invertebrates are arachnids a part of?

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1. Which of the following is NOT a characteristic of arachnids?

2. Which of the following best describes the survival advantage of having jointed appendages?

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About This Quiz & Worksheet

You can use this printable worksheet and interactive quiz as a study guide to lead you through the accompanying lesson on arachnids. You'll be confronted with similarities and dissimilarities between different arachnids.

Quiz & Worksheet Goals

These assessments can measure your knowledge of the following:

  • Type of arachnid that doesn't lay eggs in a sack
  • Group of invertebrates of which arachnids are a part
  • Feature found only in arachnids out of the parent group
  • Characteristics that can define arachnids
  • Prime advantage of possessing jointed appendages

Skills Practiced

The worksheet and quiz offer you the chance to practice the following skills:

  • Reading comprehension - ensure that you draw the most important information from the related lesson on arachnids
  • Making connections - use your understanding of the concept of an arachnid
  • Critical thinking - apply relevant concepts to examine information about arachnids in a different light
  • Interpreting information- verify that you can read information regarding the distinguishing features of arachnids and interpret it correctly

Additional Learning

In order to learn more about the nature of arachnids, review the accompanying lesson entitled What is an Arachnid? - Definition, Characteristics & Anatomy. The lesson focuses on the following objectives:

  • Besides spiders, name some other arachnids
  • Enumerate some other members of the phylum to which arachnids belong
  • Delineate the physical characteristics of that phylum
  • Comment on some of the specialized features of arachnids
  • Discuss the uses of the exoskeleton
  • Illustrate how a spider goes about feeding itself