EVERYDAY SCIENCE

Detailed explanation-1: -Medusa bodies are shaped like an umbrella with the mouth and tentacles hanging down in the water. The mouth leads upward into the gastrovascular cavity. Medusae (plural; the singular form is medusa) are not sessile, but rather are motile, meaning that they swim freely in the ocean (Fig. 3.25 C).

Detailed explanation-2: -Polyps are a body form of cnidarians that are specialized for swimming. 2. Cnidarians are characterized by stinging spicules.

Detailed explanation-3: -They have a simple body consisting of a central gut cavity surrounded by tentacles. A jelly-like substance called mesoglea lies between the outer and inner layers of the body. There are two basic cnidarian body shapes: a polyp form, which is attached to a surface; and an upside-down free-floating form called a medusa.

Detailed explanation-4: -Throughout their lifecycle, jellyfish take on two different body forms: medusa and polyps. Polyps can reproduce asexually by budding, while medusae spawn eggs and sperm to reproduce sexually.

Detailed explanation-5: -Cnidarians have two basic body forms, medusa and polyp. Medusae, such as adult jellyfish, are free-swimming or floating.