
Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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- Using the examples from the animals you have studied in this lab, give the differences between the following phyla:
- Echinodermata and planaria
- Cnidaria and Porifera
- Annelida and Nematoda
- Cnidaria and Mollusca
- Echinodermata and Chordata
2. Charles a Biology student in California has found at the beach an animal he cannot name. What are some of the questions that he should ask to help determine the phylum of the animal?
- Based on the data that you recorded during this lab do you see a relationship between symmetry, cephalization, and number of germ layers?
- Can you tell what germ layer appears last?
- Name three characteristics or features in the phyla studied that you could tell are ancestral or primitive and three that you may call advance? Explain further?
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- Figure 27.6 Which of the following statements is false? Eumetazoans have specialized tissues and parazoans don’t. Lophotrochozoa and Ecdysozoa are both Bilataria. Acoela and Cnidaria both possess radial symmetry. Arthropods are more closely related to nematodes than they are to annelids.arrow_forwardWhich phylum includes animals that have a water vascular system? a. Echinodermata b. Hemichordata c. Chordata d. Tetrapoda e. Amniotaarrow_forwardMembers of Chondrichfhyes are thought to be descended from fishes that had. a cartilaginous skeleton a bony skeleton mucus glands slime glandsarrow_forward
- Compare the structural differences between Porifera and Cnidaria.arrow_forwardWhich of the following does not occur? a. radially symmetrical diploblast b. diploblastic eucoelomate c. protostomic coelomate d. bilaterally symmetrical deuterostomearrow_forwardWhich group of flatworms are primarily external parasites of fish? a. monogeneans b. trematodes c. cestodes d. turbellariansarrow_forward
- Cnidocytes are found in _____. a. phylum Porifera b. phylum Nemertea c. phylum Nematoda d. phylum Cnidanaarrow_forwardFigure 15.3 Which of the following statements is false? a. Eumetazoa have specialized tissues and Parazoa do not. b. Both acoelomates and pseudocoelomates have a body cavity. c. Chordates are more closely related to echinoderms than to rotifers according to the figure. d. Some animals have radial symmetry, and some animals have bilateral symmetry.arrow_forwardDescribe the feeding mechanism of sponges and identify how it is different from other animals.arrow_forward
- Cubozoans are polyps medusoids polymorphs spongesarrow_forwardWhich of the following is not true of Acanthostega? It was aquatic It had gills It had four limbs It laid shelled eggs.arrow_forwardA mantle and mantle cavity are present in: phylum Echinodermata phylum Adversoidea phylum Mollusca phylum Nemertea.arrow_forward
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