Fill out table please of morphological and developmental features Feature porife

Question

Fill out table please of morphological and developmental features

Feature porifera Cnidaria Platyhelminthes Annelida Mollusca Arthropoda Nematoda Echinodermata Chordata Presences of bilateral symmetry (Yes/no) Presence of true tissues (Yes/no) Presence of organs (Yes/no) Presence of organ systems (Yes/no) Presence of coelem(s) (Yes/no) PàPresence of nerve cord (Yes/no): if yes, ventral or dorsal Have an outer cuticleéexoskeleton that is molted (Yes/no) Blastula present in the embryology (Yes/no) Gastrula present in the embryology (Yes/no) Mesoderm present in the embryology (Yes/no) Type of cell cleavage ( spiral or radial;) Cell fate in ear;yblastula (determinate or indeterminate) Fate of blastopore (mouth or anus) Origin or mesoderm (cell from rim of blastopore or out-pocketing of endoderm BIOL 2068 Animal Module. Table of morphological and developmental features. Note that some features cannot be assessed for early diverging phyla N/A. Echinodermata Chordata Porifera Cnidaria Platyhelminthes Annelida Mollusca Arthropoda Nematoda Feature Presence of bilateral symmetry (yes/no) Presence of true tissues (yes/no) Presence of organs Presence of organ systems (yes/no) Presence of coelom (s) Presence of nerve yes, originally cord (yes/no); if yes, dorsal before general change in body ventral or dorsal Have an outer cuticle/exoskeleton that is molted Blastula present in the embryology (yes/no) Gastrula present in the embryology Mesoderm present in the embryology Type of cell cleavage irregular irregular (spiral or radial) Cell fate in early irregular irregular blastula (determinate or indeterminate) N/A (only 1 Fate of blastopore (mouth or anus) Origin of mesoderm N/A cell from rim of blastopore or out- pocketing of endoderm)

Explanation / Answer

Feature Porifera Cnidaria Platyhelminthes Annelida Mollusca Arthropoda Nematoda Echinodermata Chordata Presences of bilateral symmetry(Yes/no) Asymmetrical Radial symmetry Yes Yes Yes Yes Yes Radial symmetry Yes Presence of true tissues (Yes/no) No Yes Yes Yes Yes Yes Yes Yes Yes Presence of organs (Yes/no) No No Yes Yes Yes Yes Yes Yes Yes Presence of organ systems (Yes/no) No No No Yes Yes Yes Yes Yes yes Presence of coelom(s) (Yes/no) No No No Yes Yes Yes pseudocoelmate Yes Yes presence of nerve cord (Yes/no): if yes, ventral or dorsal No No Small bundles of nerves(ganglia) brain ,with ventral nerve cords and bundles(ganglia) Yes Ventral nreve cord Ventral nerve cord Dorsal nerve chord Dorsal nerve cord

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