BSC 1011 Lecture Notes - Lecture 3: Cnidocyte, Hydrozoa, Scyphozoa
Document Summary
To eat: physalia, portugeuse-man-of-war is an individual hydrozoan that uses a dactylozooid for defense and a gastrozooid tentacles to eat. Protein: metagenesis is when cnidarians always alternate between a haploid polyp and diploid medusa form. Guard cells: sponges have no true tissues but have body layers. True: phylum porifera is the most primitive metazoan. Amoebocytes: sponges can be either monoecious or dioecious. Because of sponges" spicules: from what sponge class are till death do us part sponges. Hexactinellida: one form of asexual reproduction in phylum porifera is regeneration. Demospongiae: class scyphozoa has just a nematocyst. Trematodes: a complete digestive tract is what you see in most animals . Insects: cephalization is observed in species with radial symmetry. False: sclerenchyma and colenchyma are found in plant"s leaf structures. Triploblastic: what is a blastocoel? an embyonic body cavity. Spiral, schizocoely: the blastopore is a byproduct of gastrulation.
