0
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.
What is the mode of reproduction in algae?
Most algae reproduce both sexually and asexually. Asexual reproduction in algae occurs through cell division, fragmentation, or spore formation. Sexual reproduction involves the fusion of gametes to form zygotes.
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.
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 the mode of reproduction of potato?
vegetative reproduction
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 .
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.
What is the body plan of the Portuguese man of war?
Unlike true jellyfish, which go through the polyp body plan as a juvenile and the medusa as an adult, Portuguese Man-of-War are colonial animals made up of both polyps and medusae. The individual animals within the colony may be in the form of polyps which contain the stinging cells that are used for catching prey or they may have some other role such as reproduction. The individual animals work together and allow the colony to function as a single organism.
