18 Questions
What type of symmetry do adult echinoderms possess?
Radial
What is the unique water vascular system in echinoderms connected to?
Tube feet
Which feature makes the endoskeleton of echinoderms peculiar?
Composed of calcium carbonate plates
In which form do echinoderms exhibit bilateral symmetry?
Larval form
What is the function of the tube feet in echinoderms?
Locomotion
Which material forms the bumps and spines on the endoskeleton of echinoderms?
Calcium carbonate
Which phylum is characterized by flattened, elongate, bilaterally symmetrical animals with a branched gastrovascular cavity and a central nervous system with several nerve cords?
Phylum Platyhelminthes
What is the purpose of the large, ventral muscular foot in mollusks?
Locomotion
Which phylum is known for having a soft body covered with a mantle that secretes a hard shell?
Mollusca
Which class of the phylum Platyhelminthes consists of free-living flatworms that have eyespots and move by means of their ciliated epidermis?
Class Turbellaria
In which class of Platyhelminthes can we find flukes, parasitic flatworms with digestive tracts and complex life cycles involving multiple hosts?
Class Trematoda
In annelids, in which segments is the clitellum usually formed?
Segments 9 to 11
Which class of Platyhelminthes consists of tapeworms that lack a digestive tract and absorb food through their body walls?
Class Cestoda
What is the significance of the girdle in a chiton's body structure?
Protection
Which mollusk class has an oval flattened body made up of 8 overlapping plates?
Class Polyplacophora
What is a distinguishing feature of Class Monogenea within the phylum Platyhelminthes?
Parasitism on fish
Why is the pallial cavity important for a chiton?
Respiration
Which phylum includes animals with a digestive tract, respiratory system, and circulatory system, unlike the phylum Platyhelminthes?
Phylum Annelida
Test your knowledge on the structure and movement of annelids. Identify and label the parts of annelids using provided images. Learn about the unique characteristics of annelids and their movement mechanisms.
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