Echinodermata are the first enterocoelous animals and they are exclusively marine. The number of species is approximately 6000. They show the organ system level of the organization. They show radial symmetry in adults and bilateral in the larva. A spiny skinned organism having pedicellariae which keeps the body surface clear of debris by suddenly opening and closing its jaws. Endoskeleton is made up of calcium carbonate ossicles and is mesodermal in origin. They have a water vascular system. Locomotion takes place with tube feet which also helps in capturing food, excretion, and respiration. They are carnivorous and have complete elementary and digestion is extracellular. So take this quiz and check your knowledge about phylum Echinodermata.
1. Echinodermata are....
A. Monoecious
B. Lack sex organs
C. Dioecious
D. None of the above
2. What kind of symmetry shows by an adult Echinoderms?
A. Biradial
B. Radial
C. Asymmetry
D. Spherical
3. Which one is an echinoderm?
A. Crayfish
B. Silverfish
C. Jellyfish
D. Starfish
4. What is the scientific name of the sea lily?
A. Asterias
B. Echinus
C. Antedon
D. Holothuria
5. Echinoderms are.....
A. Ureotelic
B. Uricotelic
C. Both of them
D. Ammonotelic
6. The stone canal of starfish is...
A. Rounded
B. Straight
C. Pentangular
D. S - shaped
7. Starfish is a...
A. Carnivorous
B. Herbivorous
C. Omnivorous
D. Sanguivorous
8. Which of the following is present in Mollusca but absent echinoderms?
A. Excretory organs
B. Flame cells
C. Larval stage
D. Malpighian tubules
9. Echinoderms are exclusively.....
A. Freshwater
B. Riverine
C. Marine
D. Esturine
10. A box like calcareous test occurs in....
A. Seastar
B. Sand dollar
C. Sea Lily
D. Sea cucumber
11. Which type of symmetry is shown by the larval form of echinodermata?
A. Bilateral Symmetry
B. Radial Symmetry
C. Both of these
D. None of these
12. The brain is ...... in the animal of phylum Echinodermata?
A. Present
B. Absent
C. Not well developed
D. Fully developed
13. Animals of the phylum Echinodermata respire through .....
A. Tube feet
B. Gills
C. Both of these
D. None of these
14. Which of the following reach ocean depths of 10,000 meters and more?
A. Star fish
B. Basket star
C. Sea cucumbers
D. Sand dollar
15. Which one of the following is dried and used in soups, particularly in Asia?
A. Star fish
B. Basket Star
C. Sand dollar
D. Sea cucumber
16. Crinoids are...... feeders.
A. Suspension
B. Small Hopper
C. Large Tube
D. Suet Cage
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