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- 1. State the function of the following parts of the genus Romalea (grasshopper):
- antenna,
- tympanum,
- spiracles,
- ovipositor (female),
- gastric caeca,
- malphigian tubules,
- tracheae,
- air sacs
What are the hairlike appendages called that anchor into the skin of annelids?
What structures do earthworms have to help dispose of nitrogenous wastes?
Briefly describe how earthworms reproduce and what structures are involved.
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- A) State the function of the following external parts of the genus Cambarus (Class Crustacea): walking legs: opening of sperm duct: gills: excretory pore: abdomen: eyes What are the hairlike appendages called that anchor into the skin of annelids? What structures do earthworms have to help dispose of nitrogenous wastes? Briefly describe how earthworms reproduce and what structures are involved.What type of symmetry is seen in the roundworm? Does it exhibit cephalization? Ascaris is a parasite that swims constantly in human intestines. What structure protects the nematode from being digested? View the Trichinella slide. Trichinella is also a parasite. It can infect humans as well as other mammals like pigs, bears, and rodents. If untreated, it can lead to death.What mammal tissue does this roundworm infect?Draw a picture below of the Trichinella as viewed under the microscope. Although not mentioned on the website, if available view the live vinegar eel specimens. If there are no live specimens available, check out this you tube video instead: https://www.youtube.com/watch?v=UnjwvtFvyeQDescribe the movement of the vinegar eels.Do they have a complete or incomplete digestive system?1. What type of symmetry is seen in the roundworm? 2. Does it exhibit cephalization? 3. Ascaris is a parasite that swims constantly in human intestines. What structure protects the nematode from being digested? 4. What mammal tissue does this roundworm infect? 5. Draw a picture below of the Trichinella as viewed under the microscope. 6. Describe the movement of the vinegar eels. 7. Do they have a complete or incomplete digestive system?
- For each of the following classes of Arthropods, identify a feature unique to the class and at least 2 organisms that belong to the class: Insecta Crustacea Chelicerata Diplopoda 2. State the function of the following parts of the genus Romalea (grasshopper): antenna, tympanum, spiracles, ovipositor (female), gastric caeca, malphigian tubules, tracheae, air sacs .1. Differentiate the feeding mechanisms of a Planaria, Tapeworm and Fasciola. Feeding mechanisms Planaria Tapeworm Fasciola 2. Relate anatomical adaptations of some species of flatworms to their parasitic mode of life. Give 5.Explain functions of each of the following in earthworms: pharynx, calciferous glands, crop, gizzard, typhlosole, chloragogen tissue
- View the preserved tapeworm and the slides of the tapeworm scolex (head) and proglottids (reproductive bodies). This is another example of a parasitic flatworm. Also, access this website to learn more about the tapeworm life cycle: http://www.cdc.gov/parasites/taeniasis/biology.html 1. What structures are located on the scolex to help the tapeworm attach to the host? 2. Are tapeworms hermaphrodites? 3. Name two livestock that can be infected by tapeworms. 4. If a human is infected, where does the tapeworm live?Describe the feeding process of a sponge. Make sure to use the following vocabulary in your answer: spongocoel, choanocytes, phagocytosis. What are some possible functions of spicules and spongin? How are these sponge parts alike and different? Why is sexual reproduction beneficial for sponges (or other organisms)? When could asexual reproduction be beneficial?1. Define sessile. Name an invertebrate with a sessile adult stage. 2. Sponges have specialized cells called collar cells. Describe how collar cells are specialized for the functions they serve. 3. What is a nematocyst? What is its function? 4. How do coral reefs form? 5. How do free-living nematodes contribute to the carbon cycle? 6. Describe the basic body plan of a mollusk. 7. What are gills? What is their function?
- 1. Describe a function for the following structures and name the phylum/class in which these structures are found. Structures Function Phylum/Class Spicules Nematocytes Notochord Tube feet Polyp Choanocytes Pharyngeal slits Amoebocytes Denticles1. Cite 5 characteristics of sponges: 2. Which characteristics are unique to ctenophores? 3. Cnidarians are diploblastic, possessing an ectoderm and endoderm. Name the gelatinous nonliving material found between these two tissues. What cells are found within this gelatinous tissue? List the functions of these cells. 4. Polyp body consists of a tubular sessile body. True or false? 5. Define radial and bilateral symmetry, and protostomes and deuterostomes: 6. The presence of two different body forms, or dimorphism, is seen in the phylum Cnidaria. The form resembles an "upside-down cup" with tentacles, and the body form consists of a tubular sessile body. Hydra is an example of the body form, and a jellyfish is an example of the pody form.Miracidium is a larval stage in the development of… Taenia solium Echinococcurs granulosus Ascaris lumbricoides Fasciola hepatica Hydrozoans are classified under cnidaria because of the presence of… Tentacles Cnidoblasts Hypostome Interstitial cells