Members of what cnidarian class have a relatively conspicuous and complex medusa stage, propel themselves through water using rhythmic contraction of muscles, and are very unlikely to kill a human through stinging by nematocysts?

Nematocysts are harpoon-like structures in Cnidarians that are coiled up inside ectoderm cells and are shot out using water pressure to sting other organisms.Question 4Select one:TrueFalse

The name of the stinging cells found in the tentacles of Cnidarians is the Answer 1 Question 11, and the structure they house used in defence or prey capture is called the

Which term refers to the unique stinging intracellular structures of cnidarians?Multiple choice question.NematocystsChoanocytesSpiculesColloblastsProglottids

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

What are cnidae?Multiple choice question.Stinging capsules other than nematocysts found in certain cnidarians.Immature medusae that will soon settle and transform into polyps.The small larvae produced by cnidarians when an egg is fertilized by a sperm cell.