Organism Adaptation 5-4-1993 1)stimulus: a change in the environment that necessities a response, or adjustment by an organism (ex. swirling dust) response: the adjustment or change you make to a stimulus (ex. blinking your eyes) 2)Protists respond to a negative stimuli by moving away from it. Protists respond to: light, irritating chemicals, temperature, touch, etc. 3)Yes, they grow towards the stimulus (ex. light). photoropism: it means the organism grows towards the light. no geotropism: it means the organism grows towards the ground. no 4)This is because animals have the most highly developed sensory systems of all organisms. 5)Three factors that affect an organism's response are the type, number, and complexity of an animal's sense organs. The way they affect the response is determined by the type, number, and complexity of the animal's sense organs. 6)positive: food, money negative: a man pointing a gun at you neutral: sound of traffic 7)In general, organisms go towards positive stimuli, and go away from negative one. 8)voluntary: eating a bowl of hot chicken soup involuntary: watering of your mouth learned: talking 9)When an animal receives a scare, it can either Fight, Flight (go away from), Freeze the/from organism that is scaring that animal. The animal releases adrenaline that gives it the strength to do one of those things. pg. 136 #3,4,challenger) 3)automatic: i)blinking your eyes when dust gets in them ii)mouth waters when you smell food iii)moving your hand away when it gets burned voluntary: i)eat a bowl of soup ii)drink water iii)watching TV 4)The stimulus. You need the stimulus to make a response. b)No, it is not possible. This is because with an action, there is a reaction. No, you need a stimuli to make a response, otherwise it is not really a response. 5)i)it comes out of the ground ii)it crows iii)it barks and chases the perpetrator iv)it chases and eats a gazelle b)i)the flooding of its home ii)getting light iii)the person breaking in iv)its hunger Challenger It helps to keep the brain and heart from freezing. pg. 146 #1-5) 1)i)taste ii)touch iii)sight iv)smell v)hearing 2)The protists can only sense chemical. 3)This effect is called sensory adaptation. b)An advantage is that you aren't bothered by the smell. A disadvantage is if you are accustomed to the smell of smoke, the smell of smoke might not alert you if your house is on fire. b)cone: when it is light out rod: when it is dark out c)They aren't as developed as some other organisms. 5)Eyelid: this is because your hell cells are very tough from being walked on. This causes them not to be very sensitive. 5-6-1993 pg.13 #1-6) 1)environment: everything in an organism's surroundings biotic environment: all living things in an environment abiotic environment: non living things in an environment 2)When you breathe, your body extracts oxygen from the air. b) large animal eats smaller animal smaller animals larger animal dies and eats plants fertilizes ground soil grows plants 3)biology,ecology: they are the study of things on earth; ecology is the study of environment, biology is the study of animals b)producers,consumers: they live off the environment; pro. manufactures food, con. can't manufacture other food, but eat other organisms c)scavenger,decomposer: both live of off dead organisms; decom. break down the bodies of dead organisms d)habitat,niche: have to do with were an animal lives hab.=enviro. space were an organism lives, niche = way an organism reacts with its environment e)environment,ecosystem: were organisms live; enviro.= everything in an organism's surroundings, eco.= were organisms of a distinct group interact 4)a)auto b)hetro c) auto d)auto e)auto f)hetro 5)biosphere: layer of planet where living things exist and interact b)lithosphere: solid portion of the Earth's surface c)hydrosphere: layer of water that covers nearly 3/4 of the Earth's surface d)atmosphere: mass of air surrounding the Earth 6)The scavengers come and totally eat the carcass. The decomposers decompose the carcass and it fertilizes the ditch. pg. 18 #1-6) 1)herbivore: animals that consume only plant material (ex. cattle, sheep) trophic level: how directly a consumer interacts with the producers of its ecosystem food chain: a feeding sequence in which each kind of organism eats the one below it in the chain (ex. grass -> mouse -> wolf) 2)Because the producer provides the food for the consumers. 3)Herbivores, this is because you need the herbivores to