What is an adaptation?, A. A sudden change in weather, B. A behavior or physical characteristic that helps an organism survive, C. A nonliving part of the environment, D. A type of habitat, What is natural selection?, A. A process where all organisms survive equally, B. A process in which organisms choose their habitats, C. A process where individuals with helpful characteristics survive and reproduce more successfully, D. A process that causes organisms to stop reproducing, Why is the great white shark dark on top and white underneath?, A. To produce more heat, B. To blend in with its surroundings in the water, C. To scare predators away, D. To help it breathe underwater, Which characteristic is most likely to become common in a species over time?, A. A characteristic that decreases survival, B. A characteristic that helps survival and reproduction, C. A harmful characteristic, D. A characteristic unrelated to the environment, What is a niche?, A. The physical place where an organism lives only, B. The role or function of an organism in its habitat, C. A type of ecosystem, D. A nonliving factor in the environment, Which of the following is included in an organism’s niche?, A. How it obtains food, B. What eats the organism, C. How it reproduces, D. All of the above, What determines an organism’s energy role in an ecosystem?, A. Its size and color, B. How it obtains food and interacts with other organisms, C. The amount of sunlight it receives, D. The weather only, Which factor could cause a population to decline in its niche?, A. Adequate water supply, B. Enough living space, C. Lack of resources such as water or space, D. Stable environmental conditions, What may happen if a population no longer fits well into its niche?, A. The population may decline., B. The population will never change., C. The population automatically becomes a producer., D. The population gains unlimited resources., What is competition?, A. A relationship where both organisms benefit, B. The struggle between organisms for the same limited resources, C. A process in which organisms make food, D. A relationship where one organism harms another, Why do the flycatcher and elf owl experience less competition?, A. They eat different foods., B. They live in different ecosystems., C. They are active at different times of the day., D. They do not need resources., What may happen if one population is more successful in competition?, A. Both populations increase equally., B. The successful population increases while the other decreases., C. Both populations disappear., D. Competition stops permanently., Which statement best describes a niche?, A. The exact physical location of an organism only, B. The role and way an organism lives in its habitat, C. The weather in an ecosystem, D. A nonliving environmental factor, What is predation?, A. A relationship where both organisms benefit, B. An interaction in which one organism kills another for food, C. A struggle for limited resources, D. A process where organisms make food, Which adaptation helps predators catch prey?, A. Camouflage only, B. Sharp teeth and claws, C. Protective shells, D. Bright flower colors, Which adaptation helps prey avoid predators?, A. Sharp claws, B. Fast swimming only, C. Camouflage and warning coloration, D. Hunting in groups, Why do prey organisms have camouflage?, A. To attract predators, B. To avoid being seen and killed, C. To compete for food, D. To increase sunlight absorption, Which statement best describes predators?, A. Organisms that are hunted by others, B. Organisms that kill other organisms for food, C. Organisms that make their own food, D. Organisms that break down dead matter, What is symbiosis?, A. A relationship where organisms compete, B. A relationship in which two species live closely together, C. A process of plant growth, D. A type of food chain, Which of the following is a type of symbiotic relationship?, A. Migration, B. Predation, C. Mutualism, D. Adaptation, In commensalism, what happens?, A. Both species benefit, B. One species benefits and the other is unaffected, C. One species is harmed, D. Both species are harmed, Birds building nests in trees is an example of, A. Mutualism, B. Parasitism, C. Competition, D. Commensalism, In the relationship between oxpecker birds and zebras, the bird gets:, A. Shelter, B. Protection, C. A meal from bugs on the zebra, D. Water, Mutualism is a relationship in which:, A. Both species benefit, B. One species benefits and the other is harmed, C. Neither species benefits, D. One species is unaffected, Why is commensalism considered uncommon in nature?, A. Species never interact, B. One species is always harmed, C. Most interactions slightly help or harm both species, D. Animals avoid each other, What is parasitism?, A. A relationship where both organisms benefit, B. A relationship where one organism benefits and harms another, C. A relationship where neither organism is affected, D. A relationship based on competition, The organism that benefits in parasitism is called the:, A. Host, B. Predator, C. Parasite, D. Producer, The organism that the parasite lives on or in is called the:, A. Consumer, B. Host, C. Competitor, D. Prey, Fleas living on a dog are an example of:, A. Mutualism, B. Commensalism, C. Parasitism, D. Cooperation, How do fleas harm dogs?, A. By stealing food, B. By biting and feeding on their blood, C. By taking shelter in their fur, D. By eating their food, Compared to the host, parasites are generally:, A. Larger, B. Stronger, C. Smaller, D. The same size, What problem can pets suffer from because of flea bites?, A. Better health, B. Severe health problems, C. Faster growth, D. More energy

Interaction in ecosystem

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