Earthworm Dissection Quiz

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Earthworm Dissection Quiz - Quiz

Most people are afraid of dissecting a living thing but if you want to be a surgeon you need to suck it up. Earthworms are ideal specimens to use for teaching basic anatomy and investigating simple organ systems. Test what you understood from the activity by taking the test below.


Questions and Answers
  • 1. 

    1. Earthworms belong to the Phylum

    • A.

      Arthropoda

    • B.

      Annelida

    • C.

      Oligochaeta

    • D.

      Wormata

    Correct Answer
    B. Annelida
    Explanation
    Earthworms belong to the Phylum Annelida. This phylum includes segmented worms, and earthworms are a well-known example of this group. They have a long, cylindrical body with numerous segments, each containing muscles and bristles called setae. Earthworms play a crucial role in soil health and nutrient cycling. They burrow through the soil, improving its structure and allowing air and water to penetrate. They also consume organic matter, breaking it down and releasing nutrients back into the soil. Their presence is an indicator of healthy soil ecosystems.

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  • 2. 

    What is a coelom?

    • A.

      A fluid-filled body cavity surronded by the mesoderm

    • B.

      An organ that is part of the digestive system

    • C.

      The hearts of the Earthworm

    • D.

      Small chitinous bristles in each segment

    Correct Answer
    A. A fluid-filled body cavity surronded by the mesoderm
    Explanation
    A coelom is a fluid-filled body cavity surrounded by the mesoderm. This cavity is present in many animals, including humans, and serves various functions such as providing a space for organs to develop and move independently, acting as a hydrostatic skeleton, and enabling efficient circulation of nutrients and waste products. The mesoderm, one of the germ layers in embryonic development, gives rise to various structures including muscles, bones, and connective tissues. Therefore, the correct answer is "A fluid-filled body cavity surrounded by the mesoderm."

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  • 3. 

    This Phylum is divided into how many classes?

    • A.

      4

    • B.

      8

    • C.

      2

    • D.

      3

    Correct Answer
    D. 3
    Explanation
    This question is asking about the number of classes in a specific phylum. The correct answer is 3. This means that the phylum in question is divided into three distinct classes.

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  • 4. 

     How many pairs of hearts do earthworms have?

    • A.

      7

    • B.

      2

    • C.

      1

    • D.

      5

    Correct Answer
    D. 5
  • 5. 

    Earthworms belong to the class Oligochaeta

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Earthworms belong to the class Oligochaeta, which is a class of segmented worms. These worms have a cylindrical body with numerous segments and bristles called setae. Earthworms are known for their important role in soil fertility as they help to break down organic matter and improve the soil structure. They also play a vital role in the ecosystem as a food source for many animals. Therefore, it is true that earthworms belong to the class Oligochaeta.

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