Approx. 7, 000 species that fall into five clades(sub-groups)
As of yet, there is no known species of parasitic echinoderms.
The largest species of echinoderm in terms of bulk is the sea star
Echinoderms typically reproduce sexually, with most species having separate sexes and external fertilization. However, some echinoderms can also reproduce asexually through processes such as fragmentation or cloning.
Five
It belongs to Echinoderms.
Echinoderms have various ecological relationships with other organisms. For example, they may have mutualistic relationships with certain species that help them remove parasites, or they may have predatory relationships with smaller organisms that they feed on. Echinoderms also provide habitats for other organisms by creating complex structures on the seafloor.
Starfish are Echinoderms, and there are many species in several orders. (see the related link)
Echinoderms obtain their energy primarily by consuming organic matter or by filter feeding. Some species also have symbiotic relationships with algae or bacteria that provide them with nutrients through photosynthesis or chemosynthesis.
The Spiny skin sea-animals also known as Echinoderms consist of about 6000 species. They are commonly grouped together as starfish and sea urchins.
Echinoderms are in the Animalia kingdom.
The scientific name for Echinoderms is Echinodermata.
No. Sea cucumbers are echinoderms-like starfish and sea urchins. There are some 1,250 known species, and many of these animals are indeed shaped like soft-bodied cucumbers