25 Questions
What is the name of the subkingdom that includes the Cnidarians?
Metazoa
What is the main characteristic of the Cnidarians' body structure?
Radial or biradial symmetry
What is the function of the cnidocytes in Cnidarians?
To capture prey
What is the name of the larvae stage in Cnidarians?
Planula
What is the name of the class that includes Hydra and Obelia?
Hydrozoa
What is the function of the gastrovascular system in Cnidarians?
To digest food and eliminate waste
What is the name of the process by which Cnidarians reproduce asexually?
Budding
What is the name of the symbiotic algae that live inside the tissues of some Cnidarians?
Zooxanthellae
How many classes are Cnidarians grouped into?
4
What is the name of the phylum that includes the Cnidarians?
Cnidaria
What is the function of the reproductive polyps in the life cycle of Obelia?
To release medusa into the water
What is the result of the fertilization of an egg by sperm in the life cycle of Obelia?
A zygote is created
What is the stage that develops into a free-swimming plantula larva?
Blastula
What is the final stage of the life cycle of Obelia?
Asexually budding colony
What is the role of medusa in the life cycle of Obelia?
To release sperm and eggs into water for fertilization
What is the name of the fire coral?
Millepora
What is the term for the feeding polyps of the Portuguese man-of-war?
Gastrozooids
What is the name of the class that includes sea wasps and box jellyfish?
Cubozoa
What is the term for the larval stage of jellyfish?
Planula
What is the name of the class that includes sea anemones and corals?
Anthozoa
What is the name of the Portuguese man-of-war?
Physalia physalis
What is the term for the adult stage of jellyfish?
Medusa
What is the name of the class that includes true jellyfish?
Scyphozoa
What is the term for the stinging cells of jellyfish?
Nematocysts
What is the name of the species of box jellyfish that is known for its potent venom?
Chironex fleckeri
Learn about the subkingdom Metazoa, its characteristics, and classification into two main groups. Understand the importance of Metazoa in the animal kingdom.
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