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How do polyp and medusae in coelenterates alternate with each other?
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.
Which phylum has both medusa and polyp stages in its life cycle?
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.
What is a medusae?
Medusae are the adult, free-swimming stage of jellyfish, characterized by a bell-shaped body with tentacles hanging down. They are capable of movement and capturing prey using their stinging tentacles. Medusae are part of the life cycle of most jellyfish species.
What are the two body forms of cnidarians?
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.
What type of symmetry do polyps have?
Polyps are radially symmetrical.
Can crystals reproduce?
No but crystal jellyfish do. Crystals reproduce by alternating between asexual benthic polyps and seasonal planktonic medusae.
Why are medusae considered plankton?
The polyps may be found attached to docks or floats, while the medusae live in the plankton.
Are cnidaria symmetrical?
Cnidaria have two basic body forms: swimming Medusae and sessile Polyps, and they are both radially symmetrical.
Reproduction of polyps?
Polyps reproduce asexually through a process called budding. This involves the formation of new polyps from the original polyp, which then detach and grow into independent individuals. Polyps can also reproduce sexually by releasing eggs and sperm into the water for fertilization.
How does polyp reproduce?
Polyps can reproduce either asexually through budding, where new polyps develop from the parent polyp, or sexually by releasing eggs and sperm into the water for fertilization. In sexual reproduction, polyps can produce larvae that will eventually settle and grow into new polyps.
How do polyp and medusae in coelenterates alternate with each other?
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.
How did polymorphism in cnidarians influence adaptive radiation of the group?
Polymorphism in cnidarians, such as having different body forms like medusae and polyps, allowed for niche differentiation and exploitation. This increased the ecological diversity within the group, facilitating adaptive radiation into various habitats and lifestyles. These different forms allowed cnidarians to occupy different ecological niches, promoting speciation and diversification.
How does the macrodactyla doreensis reproduce?
Anemone are not very picky about how the reproduce. Like many Actiniidae family members, M. doreensis commonly divides as well as buds and releases polyps.
When was Tillandsia caput-medusae created?
Tillandsia caput-medusae was created in 1880.
What is a little jellyfish?
Jellyfish development occurs in multiple phases. Sperm fertilize eggs which develop into larval planulae, become polyps, bud into ephyrae and then transform into adult medusae. In some species, specimens may skip some phases.
Is jellyfish a Medusa?
Jellyfish development occurs in multiple phases. Sperm fertilize eggs which develop into larval planulae, become polyps, bud into ephyrae and then transform into adult medusae. In some species, specimens may skip some phases.
Which phylum has both medusa and polyp stages in its life cycle?
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.
