What does the amphiblastula do?
amphiblastula A poriferan (sponge) larva in which the area of flagellate cells is equal to the area of non-flagellate cells. At metamorphosis the flagellated cells move to the interior and become choanocytes.
What kind of larvae do porifera have?
There are two general types of sponge larvae, solid parenchymella larvae and hollow amphiblastula larvae.
What is parenchymula larva?
Parenchymula is the larval stage found in phylum Porifera. Among all the options, Leucosolenia belongs to phylum Porifera while Hydra belongs to phylum Coelentrata, Ascaris belongs to phylum Nematoda and Pheretima belongs to phylum Annelida. So, the correct answer is ‘Leucosolenia’.
What is the larva of Coelenterata?
Planula larva is one of the sexual forms of the phylum Coelenterata, called as Cnidaria. Planula is a free-swimming or crawling larva. The planula body is more or less cylindrical or egg-shaped and bears numerous cilia.
What is the name of free swimming larva of Hydra?
planula
Complete answer: The larvae of the Hydra is known as a planula.
Do sea sponges have genders?
Sexual. Most sponges are hermaphrodites (function as both sexes simultaneously), although sponges have no gonads (reproductive organs).
What is Ephyra larva?
Ephyra are the larval forms of jellyfish that can inhabit the planktonic range. Ephyra break off of the scyphistoma (a stalk fixed to a hard substrate that produces larval jellyfish through budding) and become free-swimming organisms that eventually grow into adult jellyfish.
What type of larva is seen in Coelenterata?
Planula larva
Planula larva is one of the sexual forms of the phylum Coelenterata, called as Cnidaria. Planula is a free-swimming or crawling larva. The planula body is more or less cylindrical or egg-shaped and bears numerous cilia.
Which larva is present in Cnidaria?
planula, plural planulae, free-swimming or crawling larval type common in many species of the phylum Cnidaria (e.g., jellyfish, corals, and sea anemones). The planula body is more or less cylindrical or egg-shaped and bears numerous cilia (tiny hairlike projections), which are used for locomotion.
What does a Ephyra mean?
Definition of ephyra : a free-swimming larva of a scyphozoan jellyfish formed by transverse fission of a scyphistoma and growing into a medusa — compare strobila.
How an Ephyra is formed?
In the scyphozoan cnidarian Aurelia, the polypoid scyphistoma undergoes horizontal fission (strobilation) into a stack of juvenile medusas, called ephyra (Fig. 3). The ephyra transforms into male and female medusas, which produce planula larva by sexual reproduction.
What is Dipleurula larva?
Dipleurula is a hypothetical larva of the ancestral echinoderm. It represents the type of basis of all larva forms of, at least, the eleutherozoans (all echinoderms except crinoids), where the starfish, sea urchins, sea cucumbers and brittle stars belong.
What is Cydippid larva?
The ctenophores have a cydippid larva, which is ovoid or spherical with a pair of retractable tentacles. They are free swimming larvae, which swim with the help of cilia.
What is the shape of amphiblastula larva?
Amphiblastula larva is a typical free swimming larva formed in Sycon sponge reproduction. 1. It is ova! in shape. 2. It shows small micromeres with flagella on one side.
What is amphiblastula in biology?
Definition of amphiblastula : a free-swimming larva of certain sponges that is essentially a blastula with small flagellated cells in one hemisphere and large nonflagellated cells in the other
What is the larva of a sponge called?
Learn about this topic in these articles: development of sponges. In sponge: Sexual reproduction , Oscarella), called an amphiblastula, is oval in shape and has a cavity in the middle; the front half of the larva consists of cylindrical, flagellated cells, the other half of round cells without flagella.