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Name: _____________________________________ Date: ______________________________ Study/Review Worksheet for Ecosystems Quiz: A1: Give examples of the 3 main types of tropisms: A1: Define Tropism: A plant’s ___________________________ to a _______________________ or a change in its environment. A2: I can explain the difference between a positive and negative tropism: Positive: ________________________________________________________________ Negative: ________________________________________________________________ A2. Why are tropisms important to plants? ______________________________________________________________________________ ______________________________________________________________________________ A3. I can define dormancy and why it is important for plants: Dormancy: The period of ____________________________________ between seed ________________________ and _____________________________ germination. It is important because it make sure the seeds do not ________________________________ until conditions are _________________________________ for the plant’s survival. A4: I can define and give examples of biotic and abiotic factors: A BIOTIC FACTOR is something that is ______________ or was once ______________________. Examples are ____________________, humus, bacteria and ____________. An ABIOTIC FACTOR is something that is not _____________. Examples are ________________, temperature, ____________________, precipitation, rocks and __________________. A5: I can give examples of limiting factors: A limiting factor can control the _____________ of a ______________________. (the number of the same organism in a particular area) Limiting Factors for plants are ______________, water, _______________________, and space. Limiting factors for animals are _________________, water, ____________________ __________ and temperature. B9: I can define and give examples of producers, consumers and decomposers: Producers _____________ their own food through _________________________. Examples are blue-green bacteria, algae, some ________________, and __________________. They are also called ____________________________________. Consumers ____________________ their own food. Examples are carnivores, ___________________, and omnivore. They are also called __________________________. Decomposers get their food from ___________________________________. Examples are bacteria, ______________________, and earthworms. They are also called saprotrophs. They are the recyclers in the ecosystem. B10: I can explain the importance of producers and decomposers: A producer is important because they make the _______________ which supports all ____________ ________. Decomposers are important because they break down ____________ organisms and return the _________________ to the __________________. B11: I can define and give examples of herbivores, omnivores & carnivores: Herbivores eat __________________. Ex. Rabbits, _________________, grasshopper They are also called ___________________________ consumers. Carnivores eat ___________________. Ex. Lions, __________ , snakes. They are also called __________________________consumers. Omnivores eat ____________ and __________________. Ex. Raccoons, humans, and ___________________.