Living Organisms and Ecosystems-SSMS
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each of the black spaces below before clicking
on it to display the answer.
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| pollination | the transfer of pollen from the anther to the stigma
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| reproduction | the natural process among organisms by which new individuals are generated and the species perpetuated
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| fertilization | In plants, pollen grains, containing the male sex cells, enter the female sex cells in the pistil; from this union, fruit eventually grows. When fertilization occurs within a single flower, we call it self-fertilization
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| ovules | the plant part that contains the embryo sac and hence the female germ cell, which after fertilization develops into a seed
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| stamens | the pollen-bearing organ of a flower, consisting of the filament and the anther
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| petal | one of the often colored segments of the corolla of a flower
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| sepals | one of the individual leaves or parts of the calyx of a flower
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| pistils | the ovule-bearing or seed-bearing female organ of a flower, consisting when complete of ovary, style, and stigma
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| anther | the pollen-bearing part of a stamen
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| chloroplast | a plastid containing chlorophyll and other pigments, occurring in plants and algae that carry out photosynthesis
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| chlorophyll | the green pigment of plants and photosynthetic algae and bacteria that traps the energy of sunlight for photosynthesis
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| pigment | a colored substance used to color other materials
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| photosynthesis | the process in which organisms use water along with sunlight and carbon dioxide to make their own food
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| transpiration | the passage of water through a plant from the roots through the vascular system to the atmosphere
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| carbon dioxide | a colorless, odorless gas that is exhaled by animals and absorbed by plants
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| respiration | the process by which organisms exchange gases, especially oxygen and carbon dioxide, with the environment
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| stimuli | something that incites to action or exertion or quickens action, feeling, thought, etc.
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| tropisms | an orientation of an organism to an external stimulus, as light, especially by growth rather than by movement
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| food chain | a series of events in which one organism eats another and obtains energy
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| food web | the pattern of overlapping food chains in an ecosystem
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| energy pyramid | a diagram that shows the amount of energy that moves from one feeding level to another in a food web
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| energy | the ability to do work or cause change
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| matter | anything that has mass and takes up space
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| ecosystems | the community of organisms that live in particular area, along with their nonliving surroundings
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| producer | an organism that can make its own food
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| biotic factors | a living part of an organism's habitat
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| abiotic factor | a nonliving part of an organism
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| consumer | an organism that obtains energy by feeding on other organisms
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| herbivore | consumer that eats only plants
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| carnivore | a consumer that eats only animals
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| omnivore | a consumer that eats both plants and animals
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| scavenger | a carnivore that feeds on the bodies of dead organisms
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| decomposer | an organism that breaks down wastes and dead organisms
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| competition | the struggle between organisms to survive as they attempt to use the same limited resource
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| predation | an interaction in which one organism kills another for food
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| predator | the organism that does the killing in a predation interaction
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| prey | an organism that is killed and eaten by another organism
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| symbiosis | a close relationship between species that benefits at least one of the species
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| mutualism | a relationship between two species in which both species benefit
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| commensalisms | a relationship between two species in which one species benefits and the other is neither helped nor harmed
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| parasitism | a relationship in which one organism lives on or in a host and harms it
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| parasite | the organism that benefits by living on or in a host in a parasitism interaction
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| host | the organism that a parasite lives in or on in a parasitism interaction
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Created by:
autumn.crandall
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