What Do Know About Phylum Echinodermata? Trivia Quiz

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| By Minhdoan
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What Do Know About Phylum Echinodermata? Trivia Quiz - Quiz

Echinoderms are animals that belong to any member of the phylum Echinodermata. These animals are invertebrates having spiny skin which can easily be identified by their radial symmetry such as starfish, sea urchins, sand dollars, etc. This quiz has been developed to test your knowledge about different species which belong to Phylum Echinodermata. Read the questions carefully and answer. All the best!



Questions and Answers
  • 1. 

    Which one is incorrectly paired?

    • A.

      Class Asteroidea - sea star

    • B.

      Class Ophiuroidea- feather star

    • C.

      Class Echinoidea – sea urchin

    • D.

      Class Holothuroidea- sea cucumber

    Correct Answer
    B. Class Ophiuroidea- feather star
    Explanation
    Feather star belongs to Class Crinoidea

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  • 2. 

    True or False: Adult echinoderms are radially symmetrical.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    echinoderms are radially symmetrical. However, this is a secondary characteristic of adult echinoderms

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  • 3. 

    Which of the following is NOT true of echinoderms?

    • A.

      They are all marine

    • B.

      Adult echinoderms have a dorsal nerve cord

    • C.

      Their larvae are planktonic

    • D.

      Their larvae are bilaterally symmetrical

    • E.

      Adult echinoderms have pentamerous symmetry

    Correct Answer
    B. Adult echinoderms have a dorsal nerve cord
    Explanation
    a dorsal nerve cord is a diagnostic characteristic of the Phylum Chordata

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  • 4. 

    True or False?  Echinoderms have organ system level of organization.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    echinoderms have an organ system level of organization

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  • 5. 

    The oral surface of most echinoderms

    • A.

      Is on its bottom side

    • B.

      Is where its mouth is

    • C.

      Is on its top side

    • D.

      A and b are correct

    • E.

      B and c are correct

    Correct Answer
    D. A and b are correct
    Explanation
    the mouth of most echinoderms is on the bottom, which then is the oral surface

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  • 6. 

    Which of the following is NOT true about tube feet?

    • A.

      The water vascular system ends in the tube feet

    • B.

      Tube feet are muscular

    • C.

      Tube feet are part of the endoskeleton

    • D.

      Tube feet are used for locomotion

    • E.

      Stimuli are received by the tube feet

    Correct Answer
    C. Tube feet are part of the endoskeleton
    Explanation
    the tube feet are part of the water vascular system, not the endoskeleton.

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  • 7. 

    Which of the following is NOT a diagnostic characteristic of echinoderms?

    • A.

      Pentameral radial symmetry

    • B.

      A water vascular system

    • C.

      An internal skeleton

    • D.

      Tentacles that are used for locomotion

    • E.

      An organ system level of organization

    Correct Answer
    D. Tentacles that are used for locomotion
    Explanation
    tube feet are used for attachment, locomotion, and receiving chemical and mechanical stimuli

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  • 8. 

    Since a starfish has NO INTESTINE, the nutrients are absorbed by the

    Correct Answer
    digestive glands
    Explanation
    Starfish do not have an intestine like most animals do. Instead, they have a unique digestive system where their stomach extends through their mouth and into their arms. The digestive glands, located in the arms, are responsible for breaking down and absorbing nutrients from the food. This allows the starfish to extract the necessary nutrients for survival without the need for a traditional intestine.

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  • 9. 

    In Latin the name "echinoderm" means

    Correct Answer
    Spiny skin
    Explanation
    The correct answer is "Spiny skin." The name "echinoderm" is derived from Latin, where "echinos" means "spiny" and "derma" means "skin." This term accurately describes the physical characteristics of echinoderms, which are marine animals with a rough, spiky or spiny outer covering.

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  • 10. 

    Name one of the 3 characteristics that are found only in echinoderms

    Correct Answer
    Endoskeleton made of ossicles, water vascular system, and tube feet
    Explanation
    Echinoderms have three unique characteristics that distinguish them from other animals. Firstly, they possess an endoskeleton made of ossicles, which are small, calcified plates that provide support and protection. Secondly, echinoderms have a water vascular system, a network of fluid-filled canals that helps in locomotion, respiration, and feeding. Lastly, they have tube feet, which are small, suction-cup-like structures used for movement, feeding, and attachment. These three characteristics are exclusive to echinoderms and are not found in any other group of animals.

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  • 11. 

    Water enters the water vascular system through small pores in the

    Correct Answer
    Madreporite
    Explanation
    The madreporite is a small pore located on the aboral surface of a sea star or sea urchin. It acts as the entrance for water into the water vascular system, which is a network of canals and tubes that helps with locomotion, feeding, and respiration in these organisms. Water enters through the madreporite and then circulates throughout the body, allowing for the movement of tube feet and the exchange of gases.

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  • 12. 

    True or False:  Starfish have closed circulation

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Starfish have open circulation

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  • 13. 

    The small movable suction cupped extensions of the vascular system which aid in locomotion and feeding are called

    • A.

      Oral spine

    • B.

      Gills

    • C.

      Tube feet

    • D.

      Tentacles

    Correct Answer
    C. Tube feet
    Explanation
    tube feet extended from network of hydraulic canals and function in locomotion, feedking, and gas exchange.

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  • 14. 

    All of the following are parts of the water vascular system EXCEPT

    • A.

      Stone canal

    • B.

      Ring canal

    • C.

      Ambulacral canal

    • D.

      Radial canal

    Correct Answer
    C. Ambulacral canal
    Explanation
    Water vascular system consists of internal system of canals, tube feet(tentacle or tube-like projections of body wall), and madreporite (small opening to outside), below is the system for the sea star):
    madreporite--> stone canal--> ring canal--> radial canals--> lateral canals--> ampullae--> tube feet

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  • 15. 

    Tell the body system each part belongs to: Madreporite Nerve ring Ring canal Ossicles Gonads Skin gills Cardiac stomach

    Correct Answer
    Water Vascular system Nervous system Water vascular system Skeletal Reproductive system Respiratory/Excretory Digestive
    Explanation
    The madreporite, nerve ring, and ring canal are all part of the water vascular system in echinoderms. The ossicles are part of the skeletal system. The gonads are part of the reproductive system. Skin gills are part of the respiratory/excretory system. The cardiac stomach is part of the digestive system.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 25, 2008
    Quiz Created by
    Minhdoan

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