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Stimulus And Response 7.13AB Texas
Test Description: Seventh grade Science Texas
Instructions: Answer all questions to get your test result.
1) Which of the following is an example of a plant responding to the external stimulus of gravity?
A
a potted plant wilting when it dries out
B
a seedling growing towards a sunny window
C
plant roots growing down into the soil
D
flowers producing nectar to attract bees
2) 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
daily rise and fall in temperature
B
sun passing through the sky
C
physical contact with passing animals
D
daily rainfall patterns
3) What environmental stimulus is most likely to result in a more rapid heartbeat in an animal?
A
strong southerly winds
B
decreased temperature
C
presence of a predator
D
lack of water
4) 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
muscles relax
C
sweating increases
D
heart rate decreases
5) Which of the following is a response of the body when infected with a virus?
A
increased body temperature
B
craving salty foods
C
blood diverted to muscles
D
decreased heart rate
6) 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
raising the core body temperature
B
inhibiting the sense of balance
C
creating a sensation of hunger
D
increasing sensitivity to sound
7) Roots grow downward in the soil in response to-
A
water
B
wind
C
sunlight
D
gravity
8) When an animal is thirsty, it responds by -
A
blinking rapidly
B
drinking water
C
sweating excessively
D
eating food
9) 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
requiring more food
C
blinking rapidly
D
increasing the heart rate
10) 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
wilting and eventually dying
B
increasing its rate of photosynthesis
C
bending towards the lamp
D
shedding all of its leaves
11) When a plant wilts due to lack of water, it is responding to which of the following internal stimuli?
A
decreased rate of photosynthesis in the stem
B
increased storage of glucose in the leaves
C
decreased water pressure within the plant cells
D
lack of nutrients carried by water in the plant
12) Stunted growth of an animal can be a response to
A
eating a plant-based diet
B
lack of nutrients in diet
C
living in a hot climate
D
overexposure to sunlight
13) 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
decreased number of offspring per hatching event
C
increase in annual precipitation levels
D
increase in the population of edible plants
14) Which of the following is a response to smelling food?
A
rapid blinking
B
excessive sweating
C
increased hunger
D
sensitivity to sound
15) 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
fight serious infections
D
avoid harmful situations
16) While sitting in a room, a person notices that the temperature has become uncomfortably warm. The body will respond by-
A
vomiting
B
shivering
C
sweating
D
twitching
17) A predator chases a prey animal. The prey is likely experiencing all of the following except-
A
dilated pupils
B
increased sweating
C
onset of fever
D
rapid heartbeat
18) A plant growing in soil with a lack of water will-
A
increase glucose production in the leaves
B
produce more attractive flowers
C
shut down the vascular system
D
grow away from the sun
19) Which of the following is a likely cause of vomiting?
A
cold temperatuers
B
lack of water
C
excessive sunlight
D
ingesting spoiled food
20) 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
108 beats per minute
C
118 beats per minute
D
68 beats per minute
*select an answer for all questions
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