Porifera - Morphology, Classification, & Evolution

porifera  The simplest of all the invertebrates are the Parazoans, which include only the phylum Porifera Phylum Porifera (“pori” = pores, “fera” = The Porifera are said to contain the greatest variety of sterols found in any invertebrate phylum In most sponges the predominant sterols have a Δ5,7

Class Demospongiae is the largest in the phylum Porifera and encompasses nearly 8,000 accepted species in three subclasses: Keratosa, Phylum Porifera ได้แก่ ฟองน้ำชนิดต่างๆ เช่น ฟองน้ำแก้ว ฟองน้ำหินปูน · - มีรูพรุนโดยรอบ ลำตัวเป็นโพรง มีช่องเปิดด้านบน · - สืบพันธุ์แบบอาศัยเพศ และแบบไม่อาศัยเพศ ·

Porifera are a taxonomically difficult group , offering many possible applications for such methods Preliminary results of electro- phoretic studies on Porifera are a taxonomically difficult group , offering many possible applications for such methods Preliminary results of electro- phoretic studies on