Answer
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Hint:It is oval in shape, Amphiblastula larva has a cavity in the middle, the front half of the larva consists of cylindrical, flagellated cells while the other half of the round cells are without flagella.
Complete answer:
Let’s discuss the given options and find the correct answer.
The larvae of the Hydra is known as a planula. The cocoon divides into two parts, each of which develops into a male gamete that is released in the water by the other Hydra. The eggs are fertilized externally and the embryo develops to form larvae. The larva attaches to a substratum and develops to form a polyp and then matures into an adult Hydra.
Sycon life history involves amphiblastula larva. Sponges like Scypha are stationary animals. Development in sponges involves a free-swimming larva for dispersal either amphiblastula or parenchyma, development is indirect. A sponge of larva in which the area of flagellate cells is equal to the area of non-flagellate cells.
The reproductive organs begin to develop in early autumn. Cocoons containing fertilized eggs are laid in spring. Fully developed young emerge and develop without metamorphosis but free-living, ciliated larvae are released in a few marine species In most species. In some species, the organism is the complete individual.
The Parenchymula is the larva of sponges. Leucosolenia releases free-swimming hollow larvae called coeloblastula.
Hence the correct answer is option B: Sycon.
Note:The amphiblastula is preceded by a stage called stomoblastula in which the central cavity of a blastula opens outward and is surrounded by round granular cells, micromere.
Complete answer:
Let’s discuss the given options and find the correct answer.
The larvae of the Hydra is known as a planula. The cocoon divides into two parts, each of which develops into a male gamete that is released in the water by the other Hydra. The eggs are fertilized externally and the embryo develops to form larvae. The larva attaches to a substratum and develops to form a polyp and then matures into an adult Hydra.
Sycon life history involves amphiblastula larva. Sponges like Scypha are stationary animals. Development in sponges involves a free-swimming larva for dispersal either amphiblastula or parenchyma, development is indirect. A sponge of larva in which the area of flagellate cells is equal to the area of non-flagellate cells.
The reproductive organs begin to develop in early autumn. Cocoons containing fertilized eggs are laid in spring. Fully developed young emerge and develop without metamorphosis but free-living, ciliated larvae are released in a few marine species In most species. In some species, the organism is the complete individual.
The Parenchymula is the larva of sponges. Leucosolenia releases free-swimming hollow larvae called coeloblastula.
Hence the correct answer is option B: Sycon.
Note:The amphiblastula is preceded by a stage called stomoblastula in which the central cavity of a blastula opens outward and is surrounded by round granular cells, micromere.
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