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Biology
6th -
8thgrade
Homeostasis - Responding to External and Internal Stimuli
22 questions
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- 1. 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 daylight.Increase in the population of edible plants.Decreased number of offspring per hatching event.Increase in annual precipitation levels.
- 2. Multiple ChoiceWhich of the following is a response to smelling food?Rapid blinkingExcessive sweatingIncreased hungerSensitivity to sound
- 3. Multiple ChoicePain is a stimulus in animals that leads to responses which help the animal to -find food in the habitat.recuperate after exercise.avoid harmful situations.fight serious infections.
- 4. Multiple ChoiceWhile sitting in a room, a person notices that the temperature has become uncomfortably warm. The body will respond by -shivering.sweating.twitching.vomiting.
- 5. Multiple ChoiceA student in gym class wants to measure how much his heart rate increases after sprinting 25 feet. The student records his resting heart rate at 12 beats per 10 seconds. After the student sprinted 25 feet, he recorded his heart beat at 130 beats per minute. Calculate the difference in the student’s heart rate (beats per minute) from his initial steady state.58.062.056.064.0
- 6. Multiple ChoiceA predator chases a prey animal. The prey is likely experiencing all of the following EXCEPT -rapid heartbeat.dilated pupils.increased sweating.onset of fever.
- 7. Multiple ChoiceA plant growing in soil with a lack of water will -grow away from the Sun.produce more attractive flowers.shut down the vascular system.increase glucose production in the leaves.
- 8. Multiple ChoiceWhich of the following is a likely cause of vomiting?Ingesting spoiled foodCold temperaturesLack of waterExcessive sunlight
- 9. Multiple ChoiceRoots grow downward in the soil in response to -gravity.sunlight.water.wind.
- 10. Multiple ChoiceWhen an animal is thirsty, it responds by -eating food.drinking water.blinking rapidly.sweating excessively.
- 11. Multiple ChoiceA crocodile quietly stalks its prey, a wildebeest, drinking at a water hole. The wildebeest suddenly sees the crocodile approaching. The wildebeest’s body responds by -shedding thick fur.blinking rapidly.increasing the heart rate.requiring more food.
- 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 will likely 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 lack of water, 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 ChoiceStunted growth of an animal can be a response to -overexposure to sunlight.lack of nutrients in diet.eating a plant-based diet.eating a meat-based diet.
- 15. Multiple ChoiceWhen an animal is infected with a virus, the body responds by creating conditions that are not favorable for the virus. It does this by -creating a sensation of hunger.raising the core body temperature.increasing sensitivity to sound.inhibiting the sense of balance.
- 16. Multiple ChoiceOne role of the pancreas is to create enzymes to help breakdown food. This function makes it part of which system?EndocrineImmuneDigestiveUrinary
- 17. Multiple ChoiceA second function of the pancreas is to make certain hormones, because of this it is also part of what other system?EndocrineDigestiveCirculatoryImmune
- 18. Multiple ChoiceWhich system detects changes in the environment and sends electrical signals in response to these changes?NervousEndocrineLymphaticReproductive
- 19. Multiple ChoiceThis system carries oxygen, nutrients and waste around the body.LymphaticUrinaryRespiratoryCirculatory
- 20. Multiple ChoiceWhat is the main function of the respiratory system?o provide oxygen and remove carbon dioxide from the bodyto bring oxygen to the bodyto break down food and absorb nutrientsto remove oxygen from the body and deliver carbon dioxide
- 21. Multiple ChoiceWhat is the function of the digestive system?to break down and absorb nutrientsto support and protect our bodiesto produce vitamin Dto help us move
- 22. Multiple ChoiceWhat function does the heart do?Protects organs and produces red blood cells.Generates heat.Breaks down food into nutrients.The heart is a pump, which moves the blood. The arteries and veins are the pipes where the blood flows.
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