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No, unlike many other Cnidarins, they never attach to a surface at any stage. Mature Physalia reproduce sexually by releasing either male or female gametes into the water where the actual fertilization takes place. This usually is triggered when a large group of mature individuals happen to gather together, increasing the fertility rate.
The free-swimming, larval offspring then starts to grow and differentiate into specialized individuals both by mitotic cell division and by asexual 'budding'. Budding results in individuals that share the same genetic information with other individuals in that colony, however they remain attached to each other to form a colony. Further mitotic cellular replication, under the influence of genetically controlled mechanisms, allows individuals to differentiate into one of four specialized types of zooids, much like the differentiation in multi-cellular animals of their various types of tissues and organs. The difference, of course, is that most multi-cellular animals are only one individual instead a collection of attached individuals. Asexual budding continues throughout the life cycle of the colony, constantly replacing or adding individuals as the need arises.
The Physalia physalis species near Florida has been studied intensely. They grow about 32mm in float length per month, and reach sexual maturity in nine months. While individuals can live hardly longer than a year, the entire population reproduces in an annual cycle. The asexual, nutritional phase of budding allows a fast growth cycle, while the sexual reproductive phase allows for genetic variation.
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What is a sessile leaf?
sessile means without stalk
What is benthic sessile?
Benthic means bottom dwelling, and sessile means non-moving.
What do you call the leaf without a petiole?
A leaf without a petiole is called a sessile leaf.
What is the opposite of a sessile?
Vagile.
What is the definition for sessile?
sessile means attached at the base; fixed to one spot, not able to move about. >> Dislocation can not move through glide are known as `Sessile dislocation' . for example; `Frank partial dislocation' can not move through glide as known as sessile dislocation. >> It is an immobile dislocation. >> Movement is possible only by climb process.
Is hydra sessile or non sessile?
a hydra as a polyp is not sessile but when it grows to be a hydra it is sessile
How dangerous is physalia physalis?
there not
Are roundworms sessile or mobile?
they are sessile
What is the deffinision of sessile?
Sessile means attached. So a sessile organism is attached to a substrate.
Where is a physalia physalis found?
Portugal
What are the characteristics of physalia?
these are found on shores
Are most producers motile or sessile?
Producers photosynthesize, making them sessile. Animals that eat the producers are called consumers. Consumers are motile. Remember, sessile means immobile, and most plants are sessile.
What kingdoms are sessile?
The kingdoms of the sessile organisms are mainly two. They are plantae and fungi depending on the particular organism of the sessile. .
When was Tapinoma sessile created?
Tapinoma sessile was created in 1917.
Is there a sessile land animal?
No they are not any sessile animals on land.
Is hibiscus a sessile or a pedicle flower?
hibiscus is pedicle flower
What is the phylum of sessile animals?
The phylum of sessile animals is Porifera, which includes organisms such as sponges. Sessile animals are ones that are permanently attached to a surface and do not move around freely.
