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- Page < 3 of 7 4. Using forceps or tweezers, gently pull the 4th or 5th pereiopod to examine its motion. Do so without tearing the appendage off from the body. How would you describe its maneuverability? What are the limitations to motion of these walking legs? Given their small size and limited capacity for muscle attachment, how is it that this animal can use these appendages for motion? 5. Describe the structural differences between the pleopods and the pereiopods up the prawn. What hypothesis can you make regarding the functional use of pleopods by comparison? Pleopods of prawns are far larger in comparison to body size then crayfish (see drawings below). What might this tell you about their use between the two closely related animals? 6. Compare the overall body plan of the prawn to that of an insect like a grasshopper (see drawings below). Provide a complete side-by-side analysis of the two groups that would include body regions, and appendages. Focus your comparison on how the…Explain the major advantages and disadvantages of mollusk exoskeletons in comparison to worm hydrostatic skeletons and vertebrate endoskeletons. Minimum of 3 paragraphs.Brachiopods with zig - zag commissures and are therefore useful in palaeobathymetry Select one True False
- View the preserved arthropod specimens available. There will be at least one example of each lineage group discussed on the website but not all of the specimens may be available. Use the table on the next page to organize your observations. Specialized segments Name of Lineage Exoskeleton? Jointed specimen Formica rufa appendages? Pandinus imperatur Rhinotia hemistictus Eurytides marcellus Ranina ranina1. Compare and contrast an Acanthocephalan and a Rotifer by providing 5 points of comparison. Point of comparison Rotifer Acanthocephalan 1. 2. 3. 4. 5. 2. What structures are found in Acanthocephalans which allows them to perform its endoparasitic life? ExplainSpecialized segments Name of Lineage Exoskeleton? Jointed appendages? specimen Formica rufa Pandinus imperatur Rhinotia hemistictus Eurytides marcellus Ranina ranina
- Label the parts that are visible of these rotifers and acanthocephalans: 1. Rotifer from class Bdelloidea 2. Rotifer from class MonogonontaBriefly describe:A. cnidarian adaptations that illustrate their major evolutionary advancements past spongesB. the differences between cnidarians and ctenophores and why ctenophores are evolutionarily more advanced than cnidariansluishing Characteristics of Invertebrates 1. Read the following riddles about the common invertebrates found in your locality. 2. Complete the table with the needed details. Riddle Animal Classification Description 1. It lives in the ocean. It likes to eat crabs. Its eight legs are called tentacles. 2. It is unsegmented body. It has a tail and a head end. It commonly lives humans. 3. It lives in the sea but itis not a fish. It has five arms covered with spiny skin on top. 4. It can be found in the branches of trees and in the house. It spins silk a flatworm with long on which can be used for capturing its prey. 5. It is a round worm which lives in the small intestine of humans. It can cause intestinal disease. 6. It does not bite nor sting. It has compound eyes. diseases. It can spread 7. It has an elongated body with one pair of legs per body It can inflict pain by segment. injecting its venom. 8. It burrows underground through the soil and brings subsoil closer to the surface. It…
- able 11.1. Comparison of some representative specimens of cnidarians. Genera Observable stage (medusa, polyp or both) Other distinctive characteristics (solitary or colonial; symmetry; with or wlo deposits) Acropora Aurelia Fungia Hydra Table 11.2. Comparison of the main body regions and appendages of arthropods. Class Body Regions Attached appendages based on body regions Diplopoda Chilopoda Insecta Arachnida XISMATERgive me three important features of dinasaurs where did you get the information? how would you verify them? Can you answer this please?For phylum Echinoderms and class Crinoidea 1. Characteristics. List whether the organism is:a. Diploblastic or triploblastic (if applicable) b. Deuterostome or protostome (if applicable) c. Coelomate, pseudocoelomate or eucoelomate 2. Organ/system characteristics. Answer the following for each organism:a. How is their circulatory system? b. Excretory/osmoregulation: How does the organism eliminate waste? What organs do they use?c. Skeleton/support: List the structures or ways this organism supports itself. 3. Ecology. Describe/answer the following for each organism:a. Does it have a complete or incomplete digestive system? How does this animal feed?b. Identify any unique feeding structure• Be sure to use the correct terms to identify any unique feeding structure(s) used by theanimal.