In cnidarians, what is a medusa?Multiple choice question.A body form in which adjoined polyps create a colony that resembles a jellyfish (as in the Portuguese man-of-war)The tubular sessile form that has a mouth at the top that is surrounded by tentaclesThe free-swimming form that is umbrella-shaped with a mouth on the concave underside, surrounded by tentaclesA stinging cell that has a trigger and a nematocyst capsule with an inverted and barbed thread
Question
In cnidarians, what is a medusa?Multiple choice question.A body form in which adjoined polyps create a colony that resembles a jellyfish (as in the Portuguese man-of-war)The tubular sessile form that has a mouth at the top that is surrounded by tentaclesThe free-swimming form that is umbrella-shaped with a mouth on the concave underside, surrounded by tentaclesA stinging cell that has a trigger and a nematocyst capsule with an inverted and barbed thread
Solution
The correct answer is: The free-swimming form that is umbrella-shaped with a mouth on the concave underside, surrounded by tentacles. This describes the medusa stage in the life cycle of cnidarians, which includes organisms like jellyfish.
Similar Questions
What is true of the two body forms found in cnidarians (polyp and medusa)?Multiple choice question.They share the same basic morphology - mouth, gastrovascular cavity, and tentacles.They do not share any parts of their morphology.They share only some parts of their morphology, namely, the tentacles.
What accurately describes reproduction in cnidarian species which do not have a medusa form?Multiple choice question.The polyp form produces gametes, but instead of becoming planula larvae, the fertilized eggs directly. settle as polypsThe polyp form only reproduces asexually producing new polyps.The polyp form produces gametes and the resulting planula develops directly into a polyp.
What cnidarian form is characterized by a cylindrical body with a mouth surrounded by tentacles at the end of the cylinder opposite where it is attached to substrate or colonial tissue?Multiple choice question.MedusaPolypPlanula
In certain cnidarian life cycles where both body forms exist, how are medusae produced?Multiple choice question.Asexually, from polypsFrom eggs and sperm, through fertilizationFrom larvae, through metamorphosisAsexually, from other medusae
How are colonies formed in cnidarians?Multiple choice question.A polyp produces medusae asexually, but instead of dispersing, they settle next to each other, forming a colony.Several planula larvae settle together and remain attached to each other, forming a colony.A polyp produces new polyps asexually and they all remain attached to one another, forming a colony.
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