Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 28, Problem 33CTQ
Enumerate features of Caenoihabditis elegans that make it a valuable model system for biologists
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Make a phylogenetic tree just including the following=
phylum nematoda (enoplea and chromadorea)
phylum nematomorpha
Phylum Priapulida
Phylum Kinorhyncha
Phylum Loricifera
Phylum Tardigrada
Phylum Onychophora
Phylum arthropoda -include subphylums and classes
USE THE DICHOTOMOUS KEY BELOW TO IDENTIFY EACH INSECT IN THE PICTURE. WRITE THE ORDER NAME OF EACH INSECT'S PICTURE IN THE SPACE PROVIDED.
INSECT DICHOTOMOUS KEY
1. DOES THE INSECT HAVE WINGS?
IF YES - GO TO STEP 2
IF NO - ORDER HEMIPTERA
2. DOES THE INSECT HAVE PARALLEL WINGS? (HINT: PARALLEL WINGS DON'T STICK OUT TO THE SIDE)
IF YES - GO TO STEP 3
IF NO - GO TO STEP 4
3. DOES THE INSECT HAVE PARALLEL LINE DOWN THE BACK THAT DIVIDES THE WINGS?
IF YES - ORDER COLEOPTERA
IF NO - ORDER ORTHOPTERA
4. DOES THE INSECT HAVE 4 TOTAL WINGS?
IF YES - GO TO STEP 5
IF NO - ORDER DIPTERA
5. DOES THE INSECT HAVE LONG ANTENNAE?
IF YES - GO TO STEP 6
IF NO - ORDER ODONATA
6. DOES THE INSECT HAVE A SMALL BODY WITH LARGE FAN-SHAPED WINGS?
IF YES - ORDER LEPIDOPTERA
IF NO - ORDER HYMENOPTERA
Construct a cladogram showing possible evolutionary relationships among:
• Platyhelminthes
• Nemertea
. Gastrotricha
Chapter 28 Solutions
Biology 2e
Ch. 28 - Figure 28.3 Which of the following statements is...Ch. 28 - Figure 28.21 Which of the following statements...Ch. 28 - Figure 28.45 Which of the following statements...Ch. 28 - Mesohyl contains: a polysaccharide gel and dead...Ch. 28 - The large central opening in the parazoan body is...Ch. 28 - Most sponge body plans are slight variations on a...Ch. 28 - Cnidocytes are found in phylum Porifera phylum...Ch. 28 - Cubozoans are polyps medusoids polymorphs spongesCh. 28 - While collecting specimens, a marine biologist...Ch. 28 - Which group of fllatworms are primarily...
Ch. 28 - The rhynchocoel is a. circulatory system...Ch. 28 - Annelids have (a): pseudocoelom true coelom no...Ch. 28 - A mantle and mantle cavity are present in: phylum...Ch. 28 - How does segmentation enhance annelid locomotion?...Ch. 28 - The embryonic development in nematodes can have up...Ch. 28 - The nematode cuticle contains. glucose skin cells...Ch. 28 - Crustaceans are ecdysozoans nematodes arachnids...Ch. 28 - Flies are ___________ . chelicerates hexapods...Ch. 28 - Which of the following is not a key advantage...Ch. 28 - Echinoderms have. triangular symmetry radial...Ch. 28 - The circulatory fluid in echinoderms is blood...Ch. 28 - Which of the following features does not...Ch. 28 - The sister taxon of the Chordata is the. Mollusca...Ch. 28 - Describe the different cell types and their...Ch. 28 - Describe the feeding mechanism of sponges and...Ch. 28 - Explain the function of nematocysts in cnidarians.Ch. 28 - Compare the structural differences between...Ch. 28 - Compare the differences in sexual reproduction...Ch. 28 - How does the tapeworm body plan support widespread...Ch. 28 - Describe the morphology and anatomy of mollusks.Ch. 28 - What are the anatomical differences between...Ch. 28 - How does a change in the circulatory system...Ch. 28 - Enumerate features of Caenoihabditis elegans that...Ch. 28 - What are the different ways in which nematodes can...Ch. 28 - Why are tardigrades essential to recolonizing...Ch. 28 - Describe the various superclasses that phylum...Ch. 28 - Compare and contrast the segmentation seen in...Ch. 28 - How do terrestrial arthropods of the subphylum...Ch. 28 - Describe the different classes of echinoderms...
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