Biotic Relationships Post Test Name: ______________________________ Score: ___________ Yr. & Sec.: ___________ Date: ___________ Direction: Choose the best corresponding answer. Write the letter of your answer on thespace provided. 1. Which of the following symbiotic relationships is considered parasitic? a. birds eating the insects from the back of a hippopotamus b. the remora fish that is attached to the belly of the shark c. the clown fish living on the sea anemone d. ticks feeding on a dog 2. What does symbiosis mean? a. living together, no relationship between 2 species b. living separately, no relationship between 2 species c. living together, close relationship between 2 species d. living separately, close relationship between 2 species 3. What is Mutualism? a. One species benefits and the other is not affected at all b. Neither of the 2 species involved benefited nor harmed c. Both species involved benefit from the relationship d. Both species involved not benefit from each other 4. Symbiosis is always _________. a. site-specific c. intra-specific b. inter-specific d. domain-specific 5. Why is symbiotic relationship important? a. It kills all the predators. b. It gets rid of all the parasites. c. Because it will benefit more for the higher form of animals. d. Allows ecosystems to overlap and become dependent on each other for survival. 6. What is Commensalism? a. One species benefits and the other is not affected at all. b. One species benefits and the other is harmed in the process. c. Neither of the 2 species involved benefited nor harmed. d. Both species involved not benefit from each other.
7. Lichen is a combination of fungus and algae that lives on the sides of trees, rocks, and other materials. The fungus provides the algae with water and minerals and the algae use the water and minerals to make food for both organisms. What type of relationship does the lichen represent? a. Commensalism c. Parasitism b. Mutualism d. Predation8. What is Parasitism? a. Both species involved were harmed. b. Neither species has contact with one another. c. One species benefits and the other is harmed in the process. d. One species benefits while the other is not benefitted or harmed9. The harmed species in a parasitic relationship is called: a. commensal c. prey b. host d. parasite10. Organisms eaten by a predator are called _______. a. Commensal c. Prey b. Host d. Parasite11. Tapeworms in your intestines have a nice warm place to live and a constant food supply. Your intestines, however, become riddled with holes and you have to eat more food. Therefore, what type of symbiotic relationship does it show? a. Commensalism c. Parasitism b. Mutualism d. Predation12. A honey bee travels around from flower to flower removing the nectar so that it can go home and make honey. In the process of this travelling, the bee picks up pollen from one flower and delivers it to another flower, thus providing the means for sexual reproduction of these plants. What symbiotic relationship does it show? a. Commensalism c. Parasitism b. Mutualism d. Predation13. In predation, predators ____________. a. Have no effect on the number of prey b. Increase the number of prey in an area c. Decrease the number of prey in an area d. Decrease the number of other predators in an area14. Mistletoe is a plant that lives and grows in trees. Its roots grow into a tree’s tissues in order to obtain food and water. The tree may become weak from loss of these nutrients. What kind of relationship exists between the tree and the mistletoe? a. Commensalism c. Parasitism b. Mutualism d. Predation
15. Which of the following in NOT an example of a symbiotic relationship? a. a mother bear caring for her cub b. worm living in a cows intestine c. fungi in the wheat fields d. a bacterial infection16. When a symbiotic relationship benefits both organisms, it is an example of: a. commensalism b. mutualism c. parasitism d. predation17. It is a type of interaction when two species use the same limited resource and often result in elimination of one organism by another. a. Competition b. Commensalism c. Predation d. Mutualism18. Which of the following is considered as an endoparasite? a. Earthworm b. Silkworm c. Tapeworm d. Bristle worm19. Leeches have been used for medicinal purposes. The leech benefits by getting blood from humans. How do humans benefit from the mutualistic relationship? a. the leech reduces the humans chance of a bacterial infection b. the leech improves the cosmetic look of the human c. the leech helps improve blood flow in the human d. the leech helps in losing weight20. All of the statements below are WRONG except: a. Commensal is the affected organism in predation. b. Competition is may result in elimination of another organism. c. Parasitism shows give-and-take relationship. d. Symbiotic relationships are always intra-specific.