Allopactric speciation<span> on </span>island<span> archipelagos. As the organisms move from </span>island<span> to </span>island,<span> rapid </span>speciation is observed because of difference in resource procurement more than just variation in environment. Once these populations adapt to the environment, speciation rapidly occurs.
On the basis of information in the paragraph above, the eggs should be able to be observed in Tp. Trichoplax adhaerens is the only extant representative of phylum Placozoa, which is a basal group of multicellular animals. Trichoplax are very flat organisms around a milimetre in diameter, lacking any organs or internal structures. They have two cellular layers, the top epitheloid layer is made of ciliated "cover cells" flattened toward the outside of the organism, and the bottom layer is made up of cylinder cells that posses cilia used in locomotion, and gland cells that lack cilia.
