Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Name: Ally McCabe Date: August 5, 2016 Biology 11 Unit 9 Assignment 1: How do sponges, cnidarians, flatworms, and roundworms obtain food? Virtual Lab Instructions: Please complete the How do sponges, cnidarians, flatworms, and roundworms obtain food Virtual Lab. External Link: http://www.glencoe.com/sites/common_assets/science/virtual_labs/LS13/LS13.html Read the information and procedures provided in the lab and complete the journal questions (provided below). Please note you should be answering your questions in detail, by providing support in the form of data values (external or from the lab) and/or scientific information/ research to explain your statements. Table/Graph Section: Table 1: Feeding Name of organism Types of feeder Portuguese Man-of-War Predator Jellyfish Predator Image of organism (insert picture/sketch) Tapeworm in Intestines of Fish Parasite Roundworm in Muscle of a Fish Parasite Rope Sponge Filter Feeder Tube Sponge Filter Feeder Leopard Flatworm Scavenger Roundworm in the Gills of a Crustacean Parasite Sea Anemone Filter Feeder Lined Flatworm Scavenger Barrel Sponge Filter Feeder Coral Filter Feeder Journal Questions: 1. Describe each of the four types of feeders identified in this activity. The four types of feeders identified in this activity are predators, scavengers, parasites, and filter feeders. Predators hunt and kill prey for their food. Scavengers obtain food from the remains of dead organisms. Parasites obtain food from a living host organism. Filter-feeders obtain food by filtering bacteria, algae, protozoans, and other materials form the water in which they live. 2. Why are filter-feeders usually stationary organisms? Filter-feeders are usually stationary organisms because as they stays still, it allows water containing nutrients to pass through them and be absorbed. 3. Early scientists classified sponges as plants. Based on your observations of the sponge’s feeding system, why do you think scientists now classify sponges as animals? I think scientists now classify sponges as animals because they are multicellular and heterotrophic. 4. Jellyfish cannot swim rapidly, yet they are efficient predators. How are they adapted to predatory life despite their lack of speed? They have adapted to predatory life despite their lack of speed because of their long tentacles that allow them to sting prey within a certain radius. They can do this faster than they could swim them. 5. Why are scavengers usually found in the lower part of the coral reef habitat? Scavengers are typically found in the lower part of the coral reef habitat because that is where dead marine life falls to. 6. How do internal parasites keep from being washed out of their host’s bodies in body fluids or wastes? Parasites prevent from being washed out of their host’s body by having mouth hooks that latch on to the inner lining of their hosts stomach or intestines. They also have an external covering that prevent them from being digested. 7. How do the methods for obtaining food change as an organism’s complexity increases? Methods for obtaining food change as natural selection favours the strongest species, making them harder to prey on, and changing the methods of obtaining food.