What Do Know About Phylum Echinodermata? Trivia Quiz

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Stephen Reinbold, PhD (Biological Sciences) |
Biology Instructor
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Stephen Reinbold has a PhD in Biological Sciences and a strong passion for teaching. He taught various subjects including General Biology, Environmental Science, Zoology, Genetics, and Anatomy & Physiology at Metropolitan Community College in Kansas City, Missouri, for nearly thirty years. He focused on scientific methodology and student research projects. Now retired, he works part-time as an editor and engages in online activities.
 , PhD (Biological Sciences)
By Minhdoan
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Minhdoan
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  • 1/15 Questions

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

    • Oral spine
    • Gills
    • Tube feet
    • Tentacles
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About This 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 Phylum Echinodermata quiz has been developed to test your knowledge about different species that belong to Phylum Echinodermata.
In addition to their unique symmetry, echinoderms exhibit fascinating regenerative abilities and play crucial roles in marine ecosystems. Through this quiz, you’ll explore various aspects of their biology, habitats, and behaviors. Sharpen your understanding and discover intriguing facts about these remarkable creatures. Start the quiz now! Read the questions carefully and answer. All the best!


What Do Know About Phylum Echinodermata? Trivia Quiz - Quiz

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  • 2. 

    True or False: Adult echinoderms are radially symmetrical.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Adult echinoderms exhibit radial symmetry, typically with a five-part (pentamerous) body plan. This means their body parts are arranged around a central axis, which is a defining characteristic of the phylum Echinodermata. However, their larvae are bilaterally symmetrical.

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  • 3. 

    Which one is incorrectly paired?

    • Class Asteroidea - sea star

    • Class Ophiuroidea- feather star

    • Class Echinoidea – sea urchin

    • Class Holothuroidea- sea cucumber

    Correct Answer
    A. Class Ophiuroidea- feather star
    Explanation
    Class Ophiuroidea includes brittle stars and basket stars, not feather stars. Feather stars belong to the Class Crinoidea. The other pairings are correct: sea stars are in Class Asteroidea, sea urchins are in Class Echinoidea, and sea cucumbers are in Class Holothuroidea.

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  • 4. 

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

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Echinoderms possess an organ system level of organization. They have complex structures including a water vascular system for movement and feeding, a digestive system, a nervous system, and reproductive organs. This level of organization allows them to perform various functions necessary for survival.

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  • 5. 

    The madreporite is a part of which body system?

    • Digestive system

    • Nervous system

    • Water vascular system

    • Circulatory system

    Correct Answer
    A. Water vascular system
    Explanation
    The madreporite is a sieve-like structure on the surface of echinoderms, such as starfish, that serves as the entry point for seawater into the water vascular system. This system is crucial for locomotion, feeding, and respiration in these organisms.

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  • 6. 

    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, spikey, or spiny outer covering.

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  • 7. 

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

    • Pentameral radial symmetry

    • A water vascular system

    • An internal skeleton

    • Tentacles that are used for locomotion

    • An organ system level of organization

    Correct Answer
    A. Tentacles that are used for locomotion
    Explanation
    Echinoderms do not have tentacles used for locomotion. Instead, they use tube feet, which are part of their water vascular system, for movement. The other characteristics listed (pentameral radial symmetry, a water vascular system, an internal skeleton, and an organ system level of organization) are true diagnostic features of echinoderms.

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  • 8. 

    The oral surface of most echinoderms

    • Is on its bottom side

    • Is where its mouth is

    • Is on its top side

    • A and b are correct

    • B and c are correct

    Correct Answer
    A. A and b are correct
    Explanation
    The oral surface of most echinoderms, such as sea stars, is on the bottom side where their mouth is located. This allows them to feed effectively while moving along surfaces.

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  • 9. 

    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 gasses.

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  • 10. 

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

    • Stone canal

    • Ring canal

    • Ambulacral canal

    • Radial canal

    Correct Answer
    A. 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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  • 11. 

    True or False:  Starfish have closed circulation

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Starfish, or sea stars, do not have a closed circulatory system. Instead, they possess an open circulatory system where the coelomic fluid moves freely within the body cavity, helping to transport nutrients and gases. Their water vascular system, which includes the tube feet, also plays a crucial role in their movement and circulation.

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  • 12. 

    Which of the following is NOT true of echinoderms?

    • They are all marine

    • Adult echinoderms have a dorsal nerve cord

    • Their larvae are planktonic

    • Their larvae are bilaterally symmetrical

    • Adult echinoderms have pentamerous symmetry

    Correct Answer
    A. Adult echinoderms have a dorsal nerve cord
    Explanation
    Adult echinoderms do not have a dorsal nerve cord. Instead, they have a decentralized nerve net. The other statements are true: echinoderms are exclusively marine, their larvae are planktonic and bilaterally symmetrical, and adult echinoderms typically exhibit pentamerous radial symmetry.

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  • 13. 

    Which of the following is NOT true about tube feet?

    • The water vascular system ends in the tube feet

    • Tube feet are muscular

    • Tube feet are part of the endoskeleton

    • Tube feet are used for locomotion

    • Stimuli are received by the tube feet

    Correct Answer
    A. Tube feet are part of the endoskeleton
    Explanation
    Tube feet are not part of the endoskeleton. They are part of the water vascular system, which is involved in movement, feeding, and sensory reception. The endoskeleton in echinoderms is composed of calcareous plates or ossicles, which provide structural support.

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  • 14. 

    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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  • 15. 

    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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Stephen Reinbold |PhD (Biological Sciences) |
Biology Instructor
Stephen Reinbold has a PhD in Biological Sciences and a strong passion for teaching. He taught various subjects including General Biology, Environmental Science, Zoology, Genetics, and Anatomy & Physiology at Metropolitan Community College in Kansas City, Missouri, for nearly thirty years. He focused on scientific methodology and student research projects. Now retired, he works part-time as an editor and engages in online activities.

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  • Jun 10, 2024
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  • Sep 25, 2008
    Quiz Created by
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