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21 Μαρ 2024 · Gemmule Formation Examples. Gemmule formation is a method of asexual reproduction used by certain organisms like: Freshwater sponges (Porifera) Marine sponges, bryozoans (moss animals) Hydras (Cnidaria) Planarians (Platyhelminthes) Role of Gemmule in Sponge Reproduction
Gemmules are usually found in a round or ball-like structure, along with a central mass of amoeboid cells and a thick peripheral layer of a small siliceous spicule. The structure of Gemmules includes Micropyle, Spicule, Inner layer, Archaeocytes and an Outer pneumatic layer.
Gemmule formation occurs in freshwater by several sponges like Spongilia and some water species such as sea sponges, figuline ficus, and various other types of poriferans. The organisms give out gemmules, which further give birth to new sponges.
Gemmules are tiny, spore-like bodies formed inside the cells of some plants and animals. They produced in response to environmental stress, such as injury, extreme cold, or lack of food. Gemmules can remain dormant for long periods of time, and can then activated when conditions improve.
In this article we will discuss about the spicules and gemmule of sponge. Spicules of Sponge: 1. The spicules are structures which form the supporting skeleton in sponges. 2. They may be either calcareous or silicious in nature.
Definition. Gemmules are specialized asexual reproductive structures found in certain sponges, serving as a means for survival and dispersal. These structures can remain dormant in unfavorable conditions and can eventually develop into new sponge individuals when environmental conditions improve.
11 Ιουν 2024 · How are Gemmule Produced? Several marine species, including sea sponges, ficus filing, and other poriferans, as well as a few genera of freshwater sponges, including Spongilla, generate gemmules to endure unfavourable conditions, germinate, and produce young sponges.
