0
Medusae, the adult stage of jellyfish in the life cycle of cnidarians, primarily reproduce asexually through budding in polyps and sexually as free-swimming organisms. In their polyp stage, they can produce medusae by a process called strobilation, where the polyp develops and releases multiple juvenile medusae. In contrast, medusae reproduce sexually by producing eggs and sperm, leading to the formation of a fertilized egg that develops into a free-swimming larva known as a planula. This planula eventually settles and develops into a polyp, continuing the life cycle.
What else can I help you with?
What is metagenesis in obelia?
Metagenesis in Obelia is a reproductive strategy in which both asexual and sexual phases occur in the life cycle. It involves alternating generations of polyps (asexual stage) and medusae (sexual stage) in which both forms are capable of reproducing. This allows for genetic diversity and the production of new colonies through sexual reproduction.
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.
What organism multiplies rapidly based on its mode of asexual reproduction?
Amoeba multiply rapidly based on the mode of asexual reproduction.
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 the relationship between a stationary polyp and free swimming medusa?
Some cnidarians have a life cyce wih an alternation of generations between asexual reproduction and sexual reproduction; while asexual reproduction provides a large increasing of (identical) individuals, sexual reproduction mantain a genetic pool variety.The generation supposed to reproduce asexually is polypoid; the generation supposed to reproduce sexually is medusoid.Tipically, medusae produce male and female gametes, which fuse together making zygotes; a zygote becames an egg from which hatches a free swimming larva called planula; the planula reaches the sea floor and developes into a polyp; the polyp then becames a strobila (segmented polyp), wich reproduces asexually by strobilation, segmenting itself and producing many ephyras, which can be released one at a time or all together at the same time; each ephyra maturates into an adult medusa, reaching the reproductive maturity.
Compare the body forms of a polyp and medusa?
Polyps and medusae are two distinct body forms of cnidarians. Polyps are typically cylindrical and sessile, with a mouth and tentacles facing upward, anchored to a substrate. In contrast, medusae are free-swimming and have an umbrella-shaped, bell-like structure, with the mouth and tentacles hanging downward. This differences in morphology reflect their adaptations to different lifestyles within their life cycle, with polyps often engaging in asexual reproduction and medusae primarily involved in sexual reproduction.
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.
Can crystals reproduce?
No but crystal jellyfish do. Crystals reproduce by alternating between asexual benthic polyps and seasonal planktonic medusae.
What is the mode of reproduction of rice?
The mode of reproduction of rice is called budding or the spore reproduction. Apomixes is also another mode of rice reproduction.
How does the alternation of generations in cnidarians impact their reproductive cycle and life cycle?
The alternation of generations in cnidarians involves two different stages in their life cycle: a polyp stage and a medusa stage. This impacts their reproductive cycle by allowing for both asexual reproduction through polyps and sexual reproduction through medusae. This cycle helps cnidarians adapt to different environments and maximize their reproductive success.
What are the reproduction polyps within hydroid colony called?
B plato ppl
What is metagenesis in obelia?
Metagenesis in Obelia is a reproductive strategy in which both asexual and sexual phases occur in the life cycle. It involves alternating generations of polyps (asexual stage) and medusae (sexual stage) in which both forms are capable of reproducing. This allows for genetic diversity and the production of new colonies through sexual reproduction.
What is the mode of reproduction of medusae?
Medusa is a stage in life cycle of Cnidarians eg. Obelia in which medusae are produced by budding in blastostyl.Medusa possess sex organs i.e. testes and ovaries which produce gametes i.e. sperms and eggs which fuse to form zygote which develops in second stage of life cycle called a Polyp . Possession of two alternating stage in life cycle of Cnidarians is called Metagenesis .
What is the mode of reproduction of potato?
vegetative reproduction
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.
Did a coral spends their adult lives as Medusa?
Corals do not spend their adult lives as medusae. Instead, they primarily exist as polyps, which are sessile, cylindrical forms that attach to the substrate and form coral reefs. The medusa stage is typically associated with the life cycle of jellyfish, which are part of the same phylum, Cnidaria, but corals do not develop into medusae in their adult form. Some corals may have a medusa stage in their reproductive cycle, but they predominantly remain as polyps throughout their lives.
