These questions will help you prepare for the lesson quiz. Be sure to read the feedback carefully for any questions you answer incorrectly, and review those topics before leaving this lesson and taking the quiz.
Which of the following is a body form that is tube-like and attached to a firm surface with tentacles on the opposite side of the attachment?
- polyp
- medusa
- cnidocyte
- nematocyst
Polyps are tube-like with tentacles on top the bodies, opposite the side of the attached base.
Polyps are tube-like with tentacles on top the bodies, opposite the side of the attached base.
Polyps are tube-like with tentacles on top the bodies, opposite the side of the attached base.
Polyps are tube-like with tentacles on top the bodies, opposite the side of the attached base.
Which of the following is a body form that is shaped like an umbrella that is capable of swimming and has tentacles hanging below it?
- polyp
- medusa
- cnidocyte
- nematocyst
Jellyfish are examples of medusas. They are an inverted cup or umbrella with tentacles hanging below the umbrella.
Jellyfish are examples of medusas. They are an inverted cup or umbrella with tentacles hanging below the umbrella.
Jellyfish are examples of medusas. They are an inverted cup or umbrella with tentacles hanging below the umbrella.
Jellyfish are examples of medusas. They are an inverted cup or umbrella with tentacles hanging below the umbrella.
Which of the following describes the anthozoan class?
- A class of cnidarians that live in both forms but live in the polyp stage the majority of their life.
- A class of cnidarians that live in both forms but live in the polyp stage the majority of their life.
- A class that includes sea anemones and corals in which all the animals are in the polyp form.
- A class that includes sea anemones and corals in which all the animals are in the medusa form.
Anthozoans live only in polyp form and include the sea anemones and corals.
Anthozoans live only in polyp form and include the sea anemones and corals.
Anthozoans live only in polyp form and include the sea anemones and corals.
Anthozoans live only in polyp form and include the sea anemones and corals.
Which of the following describes the scyphozoans?
- They live in both body forms but mainly in the polyp form.
- They live in both body forms but mainly in the medusa form.
- They live only in the polyp form.
- They live only in the medusa form.
Scyphozoans are all the true jellyfish, which start out as little polyps then grow up into medusas.
Scyphozoans are all the true jellyfish, which start out as little polyps then grow up into medusas.
Scyphozoans are all the true jellyfish, which start out as little polyps then grow up into medusas.
Scyphozoans are all the true jellyfish, which start out as little polyps then grow up into medusas.
Which of the following describes a cnidocyte?
- a barbed harpoon with chemicals that can kill or stun
- a stinging cell that contains nematocysts and is a distinguishing feature of all cnidarians
- a tail-like feature that helps the animal move
- a body form that remains planted and stationary
Cnidocytes are the stinging cells of cnidarians, the distinguishing feature of all these animals.
Cnidocytes are the stinging cells of cnidarians, the distinguishing feature of all these animals.
Cnidocytes are the stinging cells of cnidarians, the distinguishing feature of all these animals.
Cnidocytes are the stinging cells of cnidarians, the distinguishing feature of all these animals.
Which of the following animals has a gastrovascular cavity?
- glass sponges
- demosponges
- corals
- T. adhaerens
All corals, sea anemones, and jellyfish have a gastrovascular cavity. Placozoans and poriferans do not.
All corals, sea anemones, and jellyfish have a gastrovascular cavity. Placozoans and poriferans do not.
All corals, sea anemones, and jellyfish have a gastrovascular cavity. Placozoans and poriferans do not.
All corals, sea anemones, and jellyfish have a gastrovascular cavity. Placozoans and poriferans do not.
Summary
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