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HONORS-Ecology HW NAME ______________________________________Per_______ MULTIPLE CHOICE: Circle the letter of the answer that is TRUE. There may be more than one correct answer. Circle TWO types of heterotrophs that eat other animals? A. omnivores B. herbivores C. carnivores All of life on earth exists in a region known as ________________ A. an ecosystem B. a biome C. the biosphere D. ecology The process in which organisms use chemical energy stored IN THE CHEMICAL BONDS OF INORGANIC MOLECULES to make their own food in the absence of light is called _________________. A. photosynthesis B. chemosynthesis C. fermentation D. cellular respiration Heterotrophs are also called ________________. A. autotrophs B. photosynthesizers C. producers D. consumers Each step in a food chain or web is called a __________________. A. energy trap B. consumer index C. trophic level D. ecology group Autotrophs can also be called _______________________. A. producers B. consumers C. detritivores D. decomposers All of the following would be considered ABIOTIC factors EXCEPT ___________ A. climate B. soil C. decomposers D. temperature ___________________ are found at the beginning of every food chain. A. producers B. primary consumers C. secondary consumers D. decomposers Only about _______ percent of the energy available within one trophic level is transferred to organisms at the next trophic level when they are eaten. 1% 5% TYPE OF HETEROTROPH 10% 50% How does it get its energy? 100% Give 2 Examples ABSORBS energy by breaking down organic matter OMNIVORE Humans, bears, crows Eat only plants FEED on dead plant and animal remains CARNIVORE PUT THE FOLLOWING IN ORDER FROM LEAST TO MOST COMPLEX BIOSPHERE POPULATION ECOSYSTEM COMMUNITY ORGANISM BIOME _________________→________________→_____________ → _________________→ ______________→_______________ USE THE DIAGRAM AT THE LEFT TO ANSWER THE FOLLOWING: The hawk in this diagram is an example of a _______________ consumer. A. primary B. secondary C. tertiary D. quaternary The mouse in this diagram is an example of a _______________ consumer. A. primary B. secondary C. tertiary D. quaternary Herbivores are always ________________ consumers. A. primary B. secondary C. tertiary D. quaternary Organisms so similar to one another that they can breed and produce fertile offspring are said to be the same A. genotype B. community C. species D. diversity In an ecosystem no two species can share the same niche in the same habitat at the same time. This is called the ________________________ __________________________ principle. What would happen in an ecosystem if there were no decomposers? BE SPECIFIC. Don’t say “everything will die” ___________________________________________________________________________________ ___________________________________________________________________________________ EXPLAIN HOW THESE ARE DIFFERENT NICHE HABITAT DECOMPOSER DETRITIVORE Name the 3 types of SYMBIOSIS TYPES OF SYMBIOSIS DESCRIPTION Relationship in which one organism benefits, but the other in neither helped nor harmed Relationship in which one organism benefits and the other is harmed in some way Relationship in which both organisms benefit EXPLAIN how predators and prey interact in an ecosystem. (Don’t just tell me one eats and the other is eaten. There is a balance and interaction between the two.) What happens to the predator population when the prey population decreases and what happens to the prey population when the predator population decreases? THINK ABOUT IT- Look at the food web below and answer the questions. Name a producer in the food web above. ______________________________________ Name a decomposer in the food web above ______________________________________ Name two heterotrophs ___________________________ ___________________________ THINK ABOUT IT: What do you think will happen to the Golden-crowned kinglet population in this community if all the salamanders were killed off by a disease? The Golden-crowned kinglet population might INCREASE because _______________________________ ________________________________________________________________________________ The Golden-crowned kinglet population might DECREASE because _______________________________ ________________________________________________________________________________ What biotic or abiotic factors could determine which of these is correct? GIVE AN EXAMPLE FROM THE DIAGRAM. ___________________________________________________________________________ ___________________________________________________________________________________ Vocabulary-Define the following: 1. Ecological succession 2. Pioneer species 3. Climax community 4. Primary succession 5. Secondary succession 6. Tertiary succession