Organism | Traits | Phylum | Plant, Animal, or Fungus
1 | Soft body with muscular foot, mantle that may secrete a shell | Mollusca | Animal
2 | Exoskeleton, segmented body with jointed appendages | Arthropoda | Animal
3 | Radial symmetry, tentacles with stinging cells, gastrovascular cavity | Cnidaria | Animal
Table A: Traits of Different Phyla
Phylum
Traits
Porifera [Sponges]
Multicellular, lack of true tissues, filter feeders, spicules for support
Cnidaria [Corals, Jellyfish]
Radial symmetry, tentacles with stinging calls, gastrovascular cavity
Platyhelminthes [Flatworms)
Bilateral symmetry, acoelomate, organ systems but no respiratory and circulatory system
Nematoda [Roundworms)
Pseudocoelomate, complete digestive system, parasitic
Annelida [Segmented worms)
Segmented, coelomate, closed circulatory system
Mollusca
Soft body with muscular foot, radula for feeding, mantle that may secrete a shell
Arthropoda
Exoskeleton, segmented body with jointed appendages, open circulatory system,
Echinodermata
Radial symmetry in adults, water vascular system for feeding and movement, endoskeleton made of calcium carbonate
Chordata
Notochard, dorsal nerve chord, pharyngeal slits
Bryozoa
Colonial, lophophore for filter feeding, some have mineralized skeletons
Brachiopoda
Bivalve shell with dorsal nerve and ventral valves, laphophore for filter feeding, U-shaped guts
Nemertea
Unsegmented body with proboscis, closed circulatory system, some are carnivorous predators
Loriciferans
Small, marine, microscopic animals, body covered in lorica for protection, mouth with retractable introvert
Onychophorans
Terrestrial organisms with many legs, soft bodies with exoskeleton, simple eyes and antennae
Tardigrada
Microscopic animals, segmented bodies, four legs with claws
Priapulid
Marine worms, u-shaped digestive system, по respiratory and circulatory system
Rotifer
Ciliated corona for feeding, pseudocoelomate, reproduce sexually and asexually
Acanthocephalans
Parasite, lack digestive system, spiny proboscis for attachment
Kinarhynch
Small marine worms, segmented, cuticle for protection, setae, or spine for locomotion
Gastrotrichs
Tiny marine, freshwater, and moist soil organisms, simple digestive system with mouth and anus, locomotion by cilia
2. Use Table A to classify the multicellular organisms and to complete Table B.
a Examine the images in the Multicellular Organisms Gallery at the end of this document.
b. For each organism, write the traits of the organism in the second column of Table B. Be sure that the organism number on the Image and the table match.
c. Identify the phylum to which each orgariism belongs. Write the name of the phylum in the third colurrin of Table B.
d. Write whether the orgariism is a plant, animal, or fungus in the fourth column of Table B.
Table B: Classification of Multicellular Organisms
Organism
Traits
Phylum
Plant, Animal, or Fungus
1
2
3
1 answer
1 answer