WebPhylum Porifera are the lowest multicellular animals belonging to the kingdom Animalia. The word “Porifera” mainly refers to the pore bearers or pore bearing species. Based on the embryological studies, sponges are proved as animals and are classified into a separate Phylum in animals. This phylum includes about 5000 species. WebDespite their lack of complexity, sponges are clearly successful organisms, having persisted on Earth for more than half a billion years. Lacking a true digestive system, sponges depend on the intracellular digestive processes of their …
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WebMar 5, 2024 · The nervous system of invertebrates. Reproduction Most invertebrates reproduce sexually. Diploid adults produce haploid gametes (sperm and eggs). In some species, the same individuals produce both sperm and eggs. In other species, sperm and eggs are produced by separate male and female individuals. WebThe life cycle of a sponge is a relatively simple one. Sponges can reproduce sexually and asexually. There are many sponge species in which each sponge is considered male and female. When it comes to sexual … tacheyt
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WebMar 5, 2024 · A sponge is a simple organism that is easy to describe: A sponge is a sedentary, filter-feeding metazoan which has a single layer of flagellated cells that drive … WebAug 7, 2024 · Class Calcarea (Calcareous sponges) Class Hexactinellida (Glass sponges) Class Demospongiae (Bath sponges) General. Give three general characteristics of sponges. ... Briefly describe the life-cycle and name the prominent stage. Name the two types of zooids found in the polyp stage. Physalia (Portuguese man-of-war) ... WebAug 17, 2016 · In this concept, we will discuss how sponges carry out each of these types of reproduction. Sexual Reproduction of Sponges. Most sponges are hermaphrodites, but an individual will usually only make one type of gamete at a time, so they are not able to self-fertilize. The general life cycle of a sponge is depicted in Figure below. tachfeld