BIO SCI 94 Lecture Notes - Lecture 31: Luffa, The Sponge, Sponge
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27 Dec 2015
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The cells of both are eukaryote cells, that is, they have a nucleus and other cell organelles. Most plants can also reproduce asexually, while some less complex animals can also. Plants carry out the processes of photosynthesis and respiration, while animals are only capable of respiration . Plants have a cell wall, while animals do not. totoipotent and can become other types of cells also form sperm and egg. Involved in the capture and digestion of food particles: lack organs, adults are sessive (attached) embryos are planktonic, filterfeeders, more are marine , observe the difference between sponges with radial and asymmetric symmetry . There is no plain you could fold the critter in 1/2 and have it line up. Radial symmetry means you could fold the critter in 1/2 in any way imaginable and it would line up: compare the appearance of members of poriferan classes demospongiea, hexactinellida and calcarea.
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