A medusae is an animal that lives for not even a day.
Typically, a mature gonozoid will have one maturing medusa visible within it.
Polyp is a asexual form which has a cylindrical body just like hydra whereas the medusa form is sexual form and has an umbrella shape. In case of Aurelia, the adult is sexual form. Males and females are separate and after copulation the female releases eggs which develop into a hydra like structure called ephyra larva which is called polyp form. This larva by budding produces umbrella shaped medusa forms. Thus the asexual polyp form alters with the sexual medusa form. This alternation of generations is called metagenesis.
Benthocodon reproduces by releasing eggs and sperm into the water during mass spawning events. Fertilization occurs externally, and the resulting larvae develop into young medusae before settling and metamorphosing into adult benthocodon.
Cnidaria is the phylum that exhibits both medusa and polyp stages in its life cycle. Medusae are the free-swimming form, while polyps are typically attached to a substrate.
The two body forms of cnidarians are the polyp and the medusa. Polyps are typically sessile, tube-shaped organisms attached to a substrate, while medusae are free-swimming, umbrella-shaped organisms.
Tillandsia caput-medusae was created in 1880.
The polyps may be found attached to docks or floats, while the medusae live in the plankton.
Medusae are found in the phylum Cnidaria, which includes jellyfish. Some species of jellyfish have free-drifting medusae as part of their life cycle, allowing them to move through the water and feed on plankton and other small organisms.
Medusae
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a Medusa (single,medusae) is a jelly fish!
Cnidaria have two basic body forms: swimming Medusae and sessile Polyps, and they are both radially symmetrical.
No but crystal jellyfish do. Crystals reproduce by alternating between asexual benthic polyps and seasonal planktonic medusae.
Edward T. Browne has written: 'Medusae' -- subject(s): Cnidaria, Jellyfishes
Typically, a mature gonozoid will have one maturing medusa visible within it.
Cnidae (singular: cnida) are tiny capsules which contains a coiled tubule and venom that causes stings when a human stung by a Jellyfish Medusae.
An acalephan is another name for an acaleph, a member of the Acalephae family - the medusae of jellyfish, and hydroids - so called because of their stinging power.