What Do Know About Phylum Echinodermata? Trivia Quiz
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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!
- 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 starExplanation
Feather star belongs to Class CrinoideaRate this question:
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- 2.
True or False: Adult echinoderms are radially symmetrical.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
echinoderms are radially symmetrical. However, this is a secondary characteristic of adult echinodermsRate this question:
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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 cordExplanation
a dorsal nerve cord is a diagnostic characteristic of the Phylum ChordataRate this question:
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- 4.
True or False? Echinoderms have organ system level of organization.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
echinoderms have an organ system level of organizationRate this question:
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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 correctExplanation
the mouth of most echinoderms is on the bottom, which then is the oral surfaceRate this question:
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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 endoskeletonExplanation
the tube feet are part of the water vascular system, not the endoskeleton.Rate this question:
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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 locomotionExplanation
tube feet are used for attachment, locomotion, and receiving chemical and mechanical stimuliRate this question:
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- 8.
Since a starfish has NO INTESTINE, the nutrients are absorbed by the
Correct Answer
digestive glandsExplanation
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.Rate this question:
- 9.
In Latin the name "echinoderm" means
Correct Answer
Spiny skinExplanation
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.Rate this question:
- 10.
Name one of the 3 characteristics that are found only in echinoderms
Correct Answer
Endoskeleton made of ossicles, water vascular system, and tube feetExplanation
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.Rate this question:
- 11.
Water enters the water vascular system through small pores in the
Correct Answer
MadreporiteExplanation
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.Rate this question:
- 12.
True or False: Starfish have closed circulation
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Starfish have open circulationRate this question:
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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 feetExplanation
tube feet extended from network of hydraulic canals and function in locomotion, feedking, and gas exchange.Rate this question:
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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 canalExplanation
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 feetRate this question:
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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 DigestiveExplanation
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.Rate this question:
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Current Version
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Mar 22, 2023Quiz Edited by
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Sep 25, 2008Quiz Created by
Minhdoan
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