endoderm digestive cavity pseudocoelom coelom Coelom Comparison Figure 27.6
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- Fay Rogers
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2 endoderm digestive cavity a. pseudocoelom coelom 176 Coelom Comparison Figure 27.6 From Mader. Sylv1a S.. Biology: Evolullon. Dwersity, and the Env,onment. 2d ed. to 1985, 1987 Wm. C. Brown Publishers, Dubuque, Iowa. All Rights Reserved. Reprinted by perm1ssion. Mader, Sylv1a S., lnqwry Into Ufe. to 1976, 1979, 1982, 1985, and 1988 by Wm. C. Brown Publishers
3 ectoderm pseudocoelom,...,. ectoderm..----mesoderm JIF~((. J~ Y~X:D:>.LW-.. '11 mesentery endoderm ~ endoderm mesoderm coelom digestive cavity a. Acoelomate flatworms b. Pseudocoelomate roundworms c. Coelomate mollusks annelids arthropods echinoderms chordates 179 Acoelomate, pseudocoelomate, coelomate comparison Figure 33A Sylvia S. Mader Biology, 6e. Copyright@ 1998 McGraw-Hill Companies, Inc. Dubuque, Iowa. All Rights Reserved.
4 7 "p bird bat whale cat horse human. Fc.t"d... ~"ftjt.lfy.s,"";iq,r,._.s WtfJ.. a. Slrfl.i (-.r- e-rr. -ryo /o,; c!~.~.~~.~~-, CA./ 150 Homolol ous Structures Mader, Sylvoa s., lnquify Into Life. e> 1976, IQS: 6 ~. I PubliShers. r
5 pore cell amoeboid cells osculum,<jfaijiii\\t ,.-',.-',.-',.-' collar cells epidermal cells collar,._ flagellum '---1~-----nucleus 177 b. Sponge Anatomy Figure 27.7 Mader, Sylv1a S., lnqwry Into Life. Q 1976, , 1985, and 1988 by Wm. C Brown Publishers Collar Cell
6 water in water out central cavity sponge wall through, /ll.. - ~...,~ '-- \. \. 1 ~ ~... w ' 1 amoeboid cell pore epidermal cell M" 1 spicule flagellum Sponge Organization collar cell ( choanocyte) 173 Generalized sponge anatomy Figure 33.3 Sylvia S. Mader Biology, 6e. Copyright@ 1998 McGraw-Hill Companies, Inc. Dubuque, Iowa. All Rights Reserved.
7 Stinging cell tentacle nematocyst nucleus stinging cell ta.l. gastrovascular cavity ovary before discharge after discharge ~mesoglea 'afil stalk foot Cross section of stalk 178 Hydra Anatomy Figure Mader. Sylvoa S., /nqulfy lnlo Life , and 1988 by Wm. C. Brown Publishers.
8 Yolk gland testis -sperm auct ~astrova. ~avity (di Pharynx.. ' m sheath seminal receptacle Penis in genital chamber genita ore I 'iril lw-t"- triparrtte \ta- ;"'al ~eye ovary... ' ~-. '"' ~ '"' " l:t 1: I I " I I ' I ) ~ I ~ f -ry '"',,.. "" "" '"' bra """... '. ceu bts:l "'"i''b' I ~ ~}~f/ nephridiopore --J;:J~ lfame 1'\ ~ l;~l (1!~~~') Publishers Planaria with Pharynx out /1oi ~;~_I ---excretory ~ canal ) ~,_/ 179 Ptanarian Anatomy Figure
9 larva encysted larva #I, suckers cysticercus, with head everted, attached to human intestine Proglottids: vitelline gland nerve cord ovary testes I excretory canal 180 Tapeworm Life Cycle Figure eggs in branching uterus vagina sperm duct genital pore Mader. Sylv1a S, /nqwry Into We. C> , and 1988 by Wm. C Brown Publ shers. uterus
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