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https://quizlet.com/17624967/chapter-33-flash-cards/
Chapter 33. STUDY. Flashcards. Learn. Write. Spell. Test. PLAY. Match. Gravity. Created by. Jenna890. ... 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. d. all of the above. sponges obtain food a. through photosynthesis b. by using ...
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.
https://quizlet.com/96183672/botany-and-zoology-flash-cards/
Start studying Botany and Zoology. Learn vocabulary, terms, and more with flashcards, games, and other study tools. ... Skeletal support in sponges is never provided by _____. a. fibers of spongin ... Which of the following statements does not support the hypothesis that vertebrates evolved from a sexually mature larval tunicate? a. Some living ...
https://answers.yahoo.com/question/index?qid=20130317172854AAsFMFu
Mar 16, 2013 · a. scolex b. tegument c. suckers d. cloaca Skeletal support in sponges is never provided by _____. a. spicules of calcium carbonate b. spicules of silicon dioxide c. calcium-magnesium ion complexes d. fibers of spongin The two major divisions of multicellular animals based on their body plan are _____and _____.
https://www.flashcardmachine.com/chapter-3314.html
May 24, 2011 · sponges can reproduce . a. by the budding of new sponges from the parent. b. by a breakup of the original parent into fragments that become a new sponge. c. sexually using sperm and eggs. d. all of the above
https://www.answers.com/Q/What_2_substances_give_the_sponge_support
Support is basically provided by the calciferous and siliceous spicules it is covered with throughout. The spicules form the skeletal framework of the sponge. Also. the sponge is attached to the ...
https://skeletalphylum.weebly.com/porifera.html
Sclerosponges are sponges with a soft body that covers a hard, skeleton made of calcium carbonate. Because of their long life span (500-1,000 years) it is thought that analysis of the aragonite skeletons of these sponges could extend data regarding ocean temperature, salinity, and other data farther into the past than has been previously possible.
https://www.shapeoflife.org/phylum-porifera-advanced
Sponges. Sponges are considered the oldest animal phyla. They are multicellular but do not have tissues or organs. The name porifera means ‘pore bearer’ in Latin. The surface of the sponge’s body is covered by a skin, one cell thick. This skin is penetrated by numerous small pores and a …
https://phylumskeletalsystem.weebly.com/porifera.html
The calcareous sponges of class Calcarea are members of the animal phylum Porifera, the cellular sponges. Calcareous sponges vary from radially symmetrical vase-shaped body types to colonies made up of lots of thin tubes. The skeleton has either a mesh or honeycomb structure.
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. SPICULES The spicules constitute major part of skeletal system, which are secreted by special mesenchymal cells called scleroblasts.
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