WebThe glass-rope sponge. 3. Class Demospongiae Sollas, 1885 (popular sponges): having skeleton of siliceous spicules, of spongin, of both, or none; spicules when present are not 6-rayed, mostly monaxon and tetraxon; leuconoid only. a. Subclass Tetractinomorpha: spicules are 4-rayed or none, no sponging. WebJan 26, 2024 · Sponge life cycle: Egg + sperm form zygote —> blastula —> develops flagella, becomes plankton —> morula —> settles on hard substrates ... In a glass sponge, spicules are organized into a _____ skeleton. latticework. In shallow water, most sponges attach to a _____ or _____ ... / k$. b) The half-life of Mn is 2.6 h. A batch of this ...
Meet the 7 Longest Living Ocean Animals - Ocean Conservancy
WebJan 1, 2007 · Glass sponges, Hexactinellida, are emerging as an important group of animals which, because of their ancient heritage, can shed light on fundamental questions such as the origin of multicellular animals, molecular evolution, and the evolution of conduction systems. WebAdult glass sponges are “sessile”, meaning they do not move. Their bodies have thousands of tiny holes, or pores, through which water constantly flows. They absorb all … instem share
BIOL 1412: Exam #2 Flashcards Quizlet
WebHexactinellida or Triaxonida or Hyalospongiae—(Glass Sponge) 3. Demospongiae. Phylum Porifera: Class # 1. Calcarea or Calcispongiae— (Calcareous Sponges): [Calcarea, L. Calcarious = limy, Calcispongiae, L. Calcis = genitive of calx = lime or chalk] ... Parenchymula larva in the life cycle of most demosponges. It includes three subclasses ... WebThe giant Pacific octopus is an intelligent animal with a well-developed brain. In laboratory tests and aquariums, it has been able to solve mazes very quickly and can unscrew jar … WebThe skeleton of the glass sponge together with various chemicals provide defense against many predators. Some starfish, however, are known to feed on glass sponges. Glass sponges live attached to hard surfaces and … insten 2.4g cordless wireless optical mouse