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- 1. Multiple Choice
Which of the following best explains the external stimulus that is causing the response in the picture?The tree, stimulated by the weather, is responding by growing towards the skyThe tree, stimulated by the sunlight, is responding by growing towards the sunThe tree, stimulated by the piano, is responding by growing through the piano.The tree, stimulated by the lack of water, is responding by growing at a slower rate - 2. Multiple ChoiceJackson is around his friend who is constantly sick. Jackson begins coughing and sneezing the next day at school. What is the possible stimulus and response?Internal stimulus is coughing, the response is getting sickExternal stimulus is coughing, the response is getting sickInternal stimulus is germs/bacteria, the response is coughingExternal stimulus is germs/bacteria, the response is coughing
- 3. Multiple ChoiceAs the season turns from winter to spring, what is the most likely response that a bear's body has to the changing season?The bear stores more body fat to maintain the necessary body heat and more nutrition because there may be less prey.The bear produces less fur and begins shedding to allow its body temperature to adjust the warming climatesThe bear's fur becomes darker so it is easier to hide from its preyThe bear begins to store food and find shelter for hibernation
- 4. Multiple ChoiceWhich of the following is an example of an external Stimuli?Becoming dehydrated and then taking a drink of waterGetting a headache and then taking ExcedrinHaving hunger pains and then eating a sandwichSmelling Pizza and then eating a piece
- 5. Multiple ChoiceA cheetah's water levels are becoming too high, and its thirst is quenched. In response to this, the cheetah's body will send internal signals...Of hunger, since the cheetah needs foodOf thirst, since all living things need waterTo sweat, so the organism can shed some of the waterOf quenched thirst, so the organism will stop drinking water
- 6. Multiple ChoiceThere is high temperature outside. What type of response can a person's body have to regulate body temperature?Wearing a jacketSweatingTaking an ice bathWearing a visor
- 7. Multiple ChoiceWhich of the following is an example of internal stimuli?Smelling pizza and then eating a piece of pizzaSeeing ice cream on television and then eating a bowl of ice creamAfter working out feeling sore in your legs and then placing ice on the sore spotAfter working out seeing a bottle of water and drinking water
- 8. Multiple ChoiceSteven sets a brand new plant near the window. After several weeks Steven realizes the flower is starting to tilt towards the sunlight. What would be considered the stimuli in this scenario?WaterThe dirt in the flower potThe sunlightThe window
- 9. Multiple ChoiceMany birds migrate long distances when the seasons change. Which of the following is an environmental stimulus that would signal to the birds the changing seasons?Changes in the length of daylightIncreases in the population of edible plantsDecreased number of offspring per hatching eventIncrease in annual precipitation levels
- 10. Multiple ChoiceStimulus...A change that prompts an action-the causeThe ability to maintain a stable internal environment (type of equilibrium or balance)How an organism reacts to a change and results in a change in behavior- the effectConstant and balanced environment
- 11. Multiple ChoiceHomeostasis...A stimulus from inside an organismHow an organism reacts to a changeThe ability to maintain a stable internal environment (type of equilibrium or balance)A stimulus from outside an organism
- 12. Multiple ChoiceA student places a plant in a dark room next to a growth lamp, while providing sufficient water and nutrients to ensure the plant's growth and survival. The plant is likely to respond by-bending towards the lamp.wilting and eventually dying.shedding all of its leaves.increasing its rate of photosynthesis
- 13. Multiple ChoiceWhen a plant wilts due to a drought, it is responding to which of the following internal stimuli?Decreased water pressure within the plant cells.lack of nutrients carried by water in the plant.Decreased rate of photosynthesis in the stem.Increased storage of glucose in the leaves.
- 14. Multiple ChoiceGeotropism is a force that affects certain organisms. Which of the following is an example of a plant responding to the external stimulus of gravity?A seedling growing towards a sunny window.Plant roots growing down into the soil.Flowers producing nectar to attract bees.A potted plant wilting when it dries out.
- 15. Multiple ChoiceRoots grow downward in the soil in response to-gravitysunlightwaterwind
- 16. Multiple ChoiceTurgor pressure can help plants move. Internal water pressure can cause-a wilted stem to return to an upright position.leaves to fall off a tree in the autumn.the roots of a plant to grow downward.a seedling to be carried by the wind.
- 17. Multiple ChoiceWhen a seedling emerges upright from the soil, which force is it overcoming?GravityMagnetismRepulsionHeat
- 18. Multiple ChoiceGeotropism is a force that affects certain organisms. Which of the following is an example of a plant responding to the external stimulus of gravity?A seedling growing towards a sunny window.Plant roots growing down into the soil.Flowers producing nectar to attract bees.A potted plant wilting when it dries out.
- 19. Multiple ChoiceBobby is singing at a concert for 80,000 people. Bobby had meal of chicken which was not cooked all of the way. Bobby is starting to feel "butterflies" in his stomach, which is making him nauseous. The feeling of nausea is an...External stimulus because the crowd is super loud from back stageInternal stimulus because the crowd is super loud from back stageInternal stimulus telling Bobby to get rid of the food that he ate because it is bad for himExternal Stimulus telling Bobby to get rid of the food the he ate because it is bad for him
- 20. Multiple ChoiceA cheetah's water levels are becoming too high, and its thirst is quenched. In response to this, the cheetah's body will send internal signals...Of hunger, since the cheetah needs foodOf thirst, since all living things need waterTo sweat, so the organism can shed some of the waterOf quenched thirst, so the organism will stop drinking water
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