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http://www.iaszoology.com/skeleton-in-sponges/
SKELETAL STRUCTURES IN PORIFERA Skeletal structures of sponges are spicules and spongin fibres. Spicules are formed by carbonates of lime or silica in the form of needle like pieces. Spongin fibres are composed of a silk-like scleroprotein.
https://www.answers.com/Q/Skeletal_support_in_sponges_may_be_provided_by
Skeletal support in sponges is accomplished by means of units called spicules. The two types of spicules are megascleres and microscleres. They can be made of proteins or minerals. Although sponges do not have a skeletal system they do have skeleton …
https://skeletalphylum.weebly.com/porifera.html
Skeletal System. - All sponges in this class are strictly marine, and, while they are distributed worldwide, most are found in shallow tropical waters. All three sponge body plans are represented within class Calcarea : asconoid, syconoid, and leuconoid.
https://www.shapeoflife.org/phylum-porifera-advanced
Spicules: structural elements found in most sponges that provide structural support, like a skeleton. Spicules can be made of silica or calcium carbonate. Collar cell or choanacyte: these cells line the interior of the sponge. Flagellum: a thread-like structure on the collar cells that whips back and forth,...
https://quizlet.com/37205895/biology-chapter-33-flash-cards/
Start studying Biology Chapter 33. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Search. ... How do waste's leave the sponges body. ... What are the two substances that a sponge's skeleton may be made of? spongin and spicules.
https://quizlet.com/9722016/chapter-8-vocab-flash-cards/
skeletal elements that give support to a sponge's body spongin a protein sometimes composing sponge spicules, which forms flexible fibers allowing the dried sponge skeleton to be flexible
https://quizlet.com/17624967/chapter-33-flash-cards/
skeletal support in sponges may be provided by a. spicules of calcium carbonate b. spicules of silicon dioxide c. fibers called spongin d. all of the above
https://quizlet.com/23762625/porifera-flash-cards/
In harsh conditions, a sponge can use gemmules as protection. When conditions better, the sponge doesn't need it anymore. They also use gemmules during asexual reproduction.
https://en.wikipedia.org/wiki/Skeletons
Sponges. The skeleton of sponges consists of microscopic calcareous or silicious spicules. The demosponges include 90% of all species of sponges. Their "skeletons" are made of spicules consisting of fibers of the protein spongin, the mineral silica, or both.FMA: 23881
https://quizlet.com/43033513/ch-28-and-29-flash-cards/
needle like structures that provide support (act like skeleton-- mesh like internal skeleton) and ward of predators (prickly defense-- protection) sponges can produce asexually and sexually
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