Unit 10 Review: Question Preview (ID: 24685)


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What process causes a plant to wilt, in response to too much or too little water?
a) photosynthesis b) respiration c) transpiration d) dehydration
A person develops an elevated body temperature from a bacterial infection. This fever is a response from the body to help fight infection by-
a) slowing the growth of the bacterial infection. b) increasing the amount of water in the body. c) increasing the body's heart rate. d) stopping additional bacteria from entering the body.
Responses in plants that result in movement away from or toward a stimulus are called-
a) tropisms. b) differentiation. c) adaptations. d) yield.
On leaf surfaces, guard cells that open and close in response to the amount of water available is an example of -
a) phototropism. b) constructive feedback. c) homeostasis. d) respiration.
In a germinating seed, the downward growth of roots and upward growth of stems are the plant's responses to gravity. Which statement best describes this phenomenon?
a) downward growth of roots-positive response to gravity and upward growth of stem-negative response to gravity b) downward growth of roots-negative response to gravity and upward growth of stem-negative response to gravity c) downward growth of roots-negative response to gravity and upward growth of stem-positive response to gravity d) downward growth of roots-positive response to gravity and upward growth of stem-positive response to gravity
In order to maintain a balance or homeostasis, the human body continually strives to maintain an average body temperature of 37 C. Which of the following processes would not help to increase body temperature?
a) Sweating b) Shivering c) Increased hair growth d) Expansion of Blood Vessels
A student is outside on a very hot day. How does perspiration help maintain a safe body temperature?
a) It prevents excess heat by the sun from entering his body. b) It causes evaporation and carries away body heat. c) It causes evaporation and saves body heat. d) It washes off the skin.
In an experiment two identical plants in identical pots are exposed to equal amounts of sunlight. Plant A received fresh water, while plant B received salt water. Which of the following did the students most likely observe?
a) Plants A and B both showed significant growth. b) Plant A appeared to be healthy, but plant B was wilted. c) Plant A was wilted, but plant B appeared to be healthy. d) Plant A experienced a change in color, but plant B did not change.
4 bean seedlings are planted in cups and placed in a box with a hole cut in one end. Based on your knowledge of phototropism, how do you predict the plants will grow?
a) All plants will grow straight up. b) All plants will grow toward the opening. c) All plants will grow away from the opening. d) Plants near the opening will grow toward the opening, all others will grow straight up.
Which of the following would happen if a plant growing in a pot were knocked over on its side and left for several weeks?
a) The stem and roots would continue to grow straight. b) The stem would turn and grow up and the roots would turn and grow down. c) The stem would turn and grow up and the roots would turn and grow up. d) The stem would continue to grow straight and the roots would turn and grow down.
A basketball player helps maintain stable body temperature during the game by perspiring. The sweat helps cool his body by evaporating. What is this an example of?
a) mitosis b) homeostasis c) respiration d) digestion
A student is doing an experiment to see how earthworms respond to light. Which piece of scientific equipment would be most appropriate for containing the earthworms for observation?
a) graduated cylinder b) beaker c) flask d) petri dish
Bean seedlings were placed in a vase of water inside a closed, dark box. After a few days a hole was cut in the box allowing light to enter and the plants were allowed to grow for a few more days. What is the purpose of this experiment?
a) to examine how the color of a light source affects seedlings b) to compare the growth rate of bean seedlings grown in the dark, with those grown in the light c) to investigate how the addition of light affects seedlings grown in the dark d) to compare a plant's response to light with a plant's response to gravity
What would be the purpose of cutting a hole in a box that holds bean seedlings growing in a vase?
a) to maintain a constant temperature in the box b) to provide an opening for carbon dioxide and oxygen exchange c) to allow the scientist to check the status of the experiment d) to control the light variable
What do scientists do to increase the reliability of their results?
a) discard results that disprove their hypothesis b) repeated their investigations many times c) record data and graph results d) change their investigation to include other variables
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