Pleurobrachia: A Representative Ctenophore
Pleurobrachia (Gr. pleuron, side, + L. brachia, arms) is about 1.5 to 2 cm in diameter. The oral pole bears […]
Pleurobrachia: A Representative Ctenophore Read More Âģ
Pleurobrachia (Gr. pleuron, side, + L. brachia, arms) is about 1.5 to 2 cm in diameter. The oral pole bears […]
Pleurobrachia: A Representative Ctenophore Read More Âģ
Sponges feed primarily by collecting suspended particles from water pumped through internal canal systems. Water enters canals through a multitude
Forms and Functions of Sponges Read More Âģ
Ctenophora (te-nof´o-ra) (Gr. kteis, ktenos, comb, +phora, pl. of bearing) is composed of about 150 species. All are marine forms
Phylum Ctenophora: The Sea Walnuts Read More Âģ
A typical hydroid has a base, a stalk, and one or more terminal zooids. The base by which colonial hydroids
Obelia: A Marine Colonial Hydroid Read More Âģ
Sponges originated before the Cambrian period. Two groups of calcareous spongelike organisms occupied early Paleozoic reefs. The Devonian period saw
Phylum Porifera: Phylogeny and Adaptive Diversification Read More Âģ
One of the most interestingâand sometimes puzzlingâaspects of this phylum is the dimorphism and often polymorphism displayed by many of
Forms and Functions of Cnidarians Read More Âģ
Phylum Cnidaria (ny-dar´e-a) (Gr. knide, nettle, + L. aria [pl. suffix], like or connected with) is an interesting group of
Phylum Cnidaria: The Flower of the Sea Read More Âģ
Sponge cells are loosely arranged in a gelatinous matrix called mesohyl, or mesenchyme. The mesohyl is the connective tissue of
Asconoids Asconoid sponges have the simplest organization. Water is drawn into the sponge through microscopic dermal pores by the beating
Canal Systems in Sponges Read More Âģ
Paramecia are often described as slipper shaped. Paramecium caudatum is 150 to 300 Âĩm in length and is blunt anteriorly
Paramecium: A Representative Free-Living Ciliate Read More Âģ