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- 1. Multiple ChoiceThe papaya mealybug is a pest that poses a threat to many tropical plants. Which fate of the mealybug would result from the inability of the species to reproduce?The species would mutateThe species would increaseThe species would become extinctThe species would continue to thrive.
- 2. Multiple ChoiceWhich abiotic factor limits the altitude at which plants can grow?the presence of a parasitethe temperature of the areathe presence of herbivorous animalsthe concentration of microbes in the soil
- 3. Multiple ChoiceRecently there was a large fire that swept across the mountains in southern California. Even though most of the black-tail deer that lived in the area are thought to have escaped the fire, this year the number of deer living in the area is much lower. What factor would best explain the smaller population of the deer?There are now many more predators in the areaThere is less food for the deer so they moved outThe deer are having more offspring which attracts predatorsThe deer were killed by hunters as they ran aways from the fire
- 4. Multiple ChoiceLargemouth bass are considered to be predators of perch. A local farmer went out to his pond one day to find many of the largemouth bass had died and were floating along the shoreline. Somehow a disease that only affects the bass family has gotten into his pond and killed them, but the perch were not affected. What would most likely happen in this aquatic ecosystem?The perch population will increase and then decrease as the food and space declineThe perch population will continue to grow indefinitely since there are very few living bass that remain to keep them in checkThe bass popullation will continue to go down because the perch are eating most of the available food.The remaining bass population will quickly become very large fish since there is plenty of food and oxygen and the perch population will remain steady.
- 5. Multiple ChoiceWhich of these best describes mutualism?a relationship between two species where both species benefita relationship between two species where neither species benefita relationship between two species where one species benefits and the other is not affecteda relationship between two species where one species benefits and the other species is harmed
- 6. Multiple ChoiceThe cattle egret (a bird) forages in pastures and fields among livestock such as cattle and horses, feeding on the insects stirred up by the movement of the grazing animals. The egrets benefit from the arrangement, but the livestock are not affected. What type of symbiotic is this?mutualisticparasiticcommensalisticpredator/prey
- 7. Multiple ChoiceOne example of a symbiotic relationship is that of the Oxpeckers (a kind of bird) and the rhinoceros or zebra. Oxpeckers live on rhinos or zebras and eat ticks and other parasites that live on their skin. The Oxpeckers get food and the beast get pest control. Also, when there is danger, the Oxpeckers fly upward and scream a warning. What type of symbiotic relationship is this?MutualisticParasiticCommensalisticPredator/Prey
- 8. Multiple ChoiceTapeworms may attach to host humans in their intestines. They constantly take in nutrients and the host is left tired, hungry, and sick. What type of symbiotic relationship is this?MutualisticParasiticCommensalisticPredator/Prey
- 9. Multiple ChoiceI saw to male deer fighting the other day. They had their antlers tangles and were throwing one another around. What kind of interaction is this?CompetitionMutualismParasitismCommensalism
- 10. Multiple ChoiceA population of salamanders that live in a river require clear, fresh water to survive. A flood causes tons of sediment to be suspended in the river. Which of these most likely will happen to the salamander population?The salamanders will adapt to life on landThe salamanders will move to another riverThe salamanders will adapt to living in muddy waterThe salamanders will decrease in number because of the water quality
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