Stimulus And Response 7.13AB Texas Question Preview (ID: 40101)
Seventh Grade Science Texas.
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Which of the following is an example of a plant responding to the external stimulus of gravity?
a) a seedling growing towards a sunny window
b) plant roots growing down into the soil
c) flowers producing nectar to attract bees
d) a potted plant wilting when it dries out
The flowers of the snow buttercup face on direction in the morning, move throughout the day, and face the other way by evening. Most likely this is a response to which stimulus?
a) sun passing through the sky
b) daily rainfall patterns
c) daily rise and fall in temperature
d) physical contact with passing animals
What environmental stimulus is most likely to result in a more rapid heartbeat in an animal?
a) decreased temperature
b) strong southerly winds
c) presence of a predator
d) lack of water
Which of the following is a change that the body will undergo to prepare for fight or flight in response to a stressful stimulus?
a) less blood to the brain
b) sweating increases
c) heart rate decreases
d) muscles relax
Which of the following is a response of the body when infected with a virus?
a) decreased heart rate
b) craving salty foods
c) blood diverted to muscles
d) increased body temperature
When an animal is infected with a virus, the body responds by creating conditions that are not favorable for the virus. It does this by-
a) creating a sensation of hunger
b) raising the core body temperature
c) increasing sensitivity to sound
d) inhibiting the sense of balance
Roots grow downward in the soil in response to-
a) gravity
b) sunlight
c) water
d) wind
When an animal is thirsty, it responds by -
a) eating food
b) drinking water
c) blinking rapidly
d) sweating excessively
A 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-
a) shedding thick fur
b) blinking rapidly
c) increasing the heart rate
d) requiring more food
A 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-
a) bending towards the lamp
b) wilting and eventually dying
c) shedding all of its leaves
d) increasing its rate of photosynthesis
When a plant wilts due to lack of water, it is responding to which of the following internal stimuli?
a) decreased water pressure within the plant cells
b) lack of nutrients carried by water in the plant
c) decreased rate of photosynthesis in the stem
d) increased storage of glucose in the leaves
Stunted growth of an animal can be a response to
a) overexposure to sunlight
b) lack of nutrients in diet
c) eating a plant-based diet
d) living in a hot climate
Many 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?
a) changes in the length of daylight
b) increase in the population of edible plants
c) decreased number of offspring per hatching event
d) increase in annual precipitation levels
Which of the following is a response to smelling food?
a) rapid blinking
b) excessive sweating
c) increased hunger
d) sensitivity to sound
Pain is a stimulus in animals that leads to responses which help the animal to-
a) find food in the habitat
b) recuperate after exercise
c) avoid harmful situations
d) fight serious infections
While sitting in a room, a person notices that the temperature has become uncomfortably warm. The body will respond by-
a) shivering
b) sweating
c) twitching
d) vomiting
A predator chases a prey animal. The prey is likely experiencing all of the following except-
a) rapid heartbeat
b) dilated pupils
c) increased sweating
d) onset of fever
A plant growing in soil with a lack of water will-
a) grow away from the sun
b) produce more attractive flowers
c) shut down the vascular system
d) increase glucose production in the leaves
Which of the following is a likely cause of vomiting?
a) ingesting spoiled food
b) cold temperatuers
c) lack of water
d) excessive sunlight
A student's resting heart rate is 12 beats per 10 seconds. After sprinting 25 feet, his heart beat is 130 beats per minute. What is the difference in his heart rate from its initial steady state?
a) 58 beats per minute
b) 68 beats per minute
c) 118 beats per minute
d) 108 beats per minute
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