Earthworm Anatomy Pretest

25 Questions | Total Attempts: 356

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Earthworm Anatomy Pretest

Welcome to the 21st century electronic biology classroom. The purpose of this study is to learn about the anatomy of the earthworm (Lumbricus terrestris L. ). You will learn how the different parts of the anatomy support the life of the animal. Your answers are lower case sensitive on this test. Choose the best answer from the multiple choice selection. Good Luck and earn high grades!


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Questions and Answers
  • 1. 
    The prostonium is found:
    • A. 

      In the intestine

    • B. 

      Over the mouth

    • C. 

      At the anus

    • D. 

      Near the crop

    • E. 

      Inside of the clitellum

  • 2. 
    The glandular swelling found on the outside of the earthworm is called the:
    • A. 

      Clitellum

    • B. 

      Prostonium

    • C. 

      Anus

    • D. 

      Seminal Receptacle

    • E. 

      Aortic Arches

  • 3. 
    The hairlike bristles on the outside of the worm are called:
    • A. 

      Ganglion

    • B. 

      Septa

    • C. 

      Nephridiopores

    • D. 

      Setae

  • 4. 
    The lighter colored flattened part of the earthworm is the:
    • A. 

      Head end

    • B. 

      Dorsal side

    • C. 

      Ventral side

    • D. 

      Tail end

  • 5. 
    The opening of the seminal receptacle is found:
    • A. 

      Under the clitellum

    • B. 

      On the ventral side

    • C. 

      Near the anus

    • D. 

      On the dorsal side

  • 6. 
    The internal cavity containing the internal organs is called the:
    • A. 

      Buccal Cavity

    • B. 

      Pharynx

    • C. 

      Ganglia

    • D. 

      Coelom

  • 7. 
    The earthworm is formed in segments both externally and internally. What are the segments called?
    • A. 

      Prostomium

    • B. 

      Somites

    • C. 

      Vas Deferns Openings

    • D. 

      Bristles

  • 8. 
    The thin walled structure for food stroage is the:
    • A. 

      Gizzard

    • B. 

      Crop

    • C. 

      Pharynx

    • D. 

      Esophagus

  • 9. 
    The Lumbricus terrestris L. has _____ aortic arches (hearts):
    • A. 

      One

    • B. 

      Two

    • C. 

      Three

    • D. 

      Four

    • E. 

      Five

    • F. 

      Eight

  • 10. 
    The _____ blood vessel that carries blood to the aortic arches (hearts) is the:
    • A. 

      Dorsal

    • B. 

      Ventral

    • C. 

      Anterior

    • D. 

      Distal

  • 11. 
    The _____  is the opening at the posterior end of the worm.
    • A. 

      Prostonium

    • B. 

      Anus

    • C. 

      Oviduct opening

    • D. 

      Septum

  • 12. 
    What is the muscular organ for grinding food called?
    • A. 

      Mouth

    • B. 

      Esophagus

    • C. 

      Crop

    • D. 

      Gizzard

    • E. 

      Pharynx

  • 13. 
    The ganglia (brain) of the earthworm are found near the:
    • A. 

      Anus

    • B. 

      Hearts

    • C. 

      Crop

    • D. 

      Pharynx

    • E. 

      Dorsal Blood Vessel

  • 14. 
    The large whiteish organs found between the aortic arches and the crop are the:
    • A. 

      Ganglia

    • B. 

      Seminal Vesicles

    • C. 

      Typhlosoles

    • D. 

      Septum

    • E. 

      Ovaries

  • 15. 
    What is the outer most layer of the earthworm (Lumbricus terrestris L.) called?
    • A. 

      Anus

    • B. 

      Cuticle

    • C. 

      Esophagus

    • D. 

      Ventral Blood Vessel

    • E. 

      Coelomic Cavity

  • 16. 
    The circular muscle layer is thinner than the longitudinal muscle layer.
    • A. 

      True

    • B. 

      False

  • 17. 
    The intestine opening at the end of the earthworm (Lumbricus terrestris L.) is the:
    • A. 

      Crop

    • B. 

      Cuticle

    • C. 

      Dorsal Blood Vessel

    • D. 

      Oviduct Opening

    • E. 

      Anus

  • 18. 
    The septa are found:
    • A. 

      Only in the seminal vesicles

    • B. 

      Between each segment

    • C. 

      Only between the hearts

    • D. 

      Inside the intestine

  • 19. 
    Most of the length of the (Lumbricus terrestris L.) contains:
    • A. 

      Lumen

    • B. 

      Hearts

    • C. 

      Seminal vesicles

    • D. 

      Intestine

    • E. 

      Esophagus

  • 20. 
    What segments do you find seminal vesicles which are whitish sacs for sperm storage?
    • A. 

      1

    • B. 

      9

    • C. 

      11

    • D. 

      12

    • E. 

      13

    • F. 

      33

  • 21. 
    The _____ _____ vessel is found just above the intestine; it carries blood the to the aortic arches.
    • A. 

      Dorsal Blood

    • B. 

      Ventral Blood

    • C. 

      Seminal Vesicles

    • D. 

      Aortic Arches

  • 22. 
    The _____ _____ vessel is an artery found just under the intestine; it carries blood away from the hearts.
    • A. 

      Distal Blood

    • B. 

      Portal Blood

    • C. 

      Ventral Blood

    • D. 

      Dorsal Blood