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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
plant roots growing down into the soil
B
flowers producing nectar to attract bees
C
a seedling growing towards a sunny window
D
a potted plant wilting when it dries out
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 rainfall patterns
B
sun passing through the sky
C
daily rise and fall in temperature
D
physical contact with passing animals
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
lack of water
D
presence of a predator
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
heart rate decreases
B
less blood to the brain
C
sweating increases
D
muscles relax
5) Which of the following is a response of the body when infected with a virus?
A
increased body temperature
B
blood diverted to muscles
C
decreased heart rate
D
craving salty foods
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
increasing sensitivity to sound
B
creating a sensation of hunger
C
raising the core body temperature
D
inhibiting the sense of balance
7) Roots grow downward in the soil in response to-
A
water
B
gravity
C
wind
D
sunlight
8) When an animal is thirsty, it responds by -
A
sweating excessively
B
drinking water
C
blinking rapidly
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
increasing the heart rate
B
shedding thick fur
C
blinking rapidly
D
requiring more food
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
increasing its rate of photosynthesis
B
wilting and eventually dying
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
increased storage of glucose in the leaves
B
decreased water pressure within the plant cells
C
lack of nutrients carried by water in the plant
D
decreased rate of photosynthesis in the stem
12) Stunted growth of an animal can be a response to
A
living in a hot climate
B
lack of nutrients in diet
C
eating a plant-based diet
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
excessive sweating
B
increased hunger
C
sensitivity to sound
D
rapid blinking
15) Pain is a stimulus in animals that leads to responses which help the animal to-
A
fight serious infections
B
recuperate after exercise
C
avoid harmful situations
D
find food in the habitat
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
twitching
D
sweating
17) A predator chases a prey animal. The prey is likely experiencing all of the following except-
A
dilated pupils
B
onset of fever
C
increased sweating
D
rapid heartbeat
18) A plant growing in soil with a lack of water will-
A
produce more attractive flowers
B
shut down the vascular system
C
grow away from the sun
D
increase glucose production in the leaves
19) Which of the following is a likely cause of vomiting?
A
excessive sunlight
B
cold temperatuers
C
lack of water
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
118 beats per minute
C
68 beats per minute
D
108 beats per minute
*select an answer for all questions
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