Bio Unit 1 Test Review 24-25

Which example best illustrates the relationship between structure and function in animals?

• A cheetah's long legs help it run fast to catch prey.

• Some birds migrate to warmer climates during winter.

• Elephants have large ears to help regulate their body temperature.

• Some fish can change color to blend into their surroundings.

Read the scenario. Hemlocks are a common type of tree in the northern forests of the United States. In studying one forest, a forester noticed that mature hemlocks were abundant but there were very few young hemlocks. She wondered why there were so few young hemlocks.

Which part of a scientific method does this best illustrate?

• setting up an experiment

• communicating the results of a study

• making an observation and asking a question

• forming a hypothesis

Michael, Abigail, and Avery are on a mission to discover how different soil types affect the growth rate of plants. They plant one group of plants in sandy soil, one group in clay soil, one group in loamy soil, and one group in peaty soil. All the plants are of the same species and receive the same amount of water and sunlight. At the end of their exciting experiment, they measure the growth rate of all the plants. What is the dependent variable?

• the type of soil

• the amount of water

• the growth rate of the plants

• the amount of sunlight

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A scientist sets up an experiment to see how colored lights affect the height of plant growth. He grows one group of plants in full sunlight, one group under red lights, one group under blue lights, and one group under green lights. All the plants are exactly that same type and all receive an equal intensity (brightness) of light. At the end of the experiment he measures all the plants. What is the independent variable?

• the intensity of the light

• the color of the light

• the height of the plant

• sunlight

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Imagine Benjamin the desert tortoise digging and hiding in a burrow during the scorching day to stay cool. Which characteristic of life does this clever behavior best illustrate?

• metabolism

• response

• growth and development

• cellular organization

Tags

NGSS.MS-LS2-1

Imagine you're a scientist like Abigail, Liam, or Noah. What should you do if the data from your experiment contradicts your hypothesis?

• Ignore the data and stick to the original hypothesis.

• Consider revising the hypothesis based on the new data.

• Assume the experiment was flawed and redo it without changes.

• Abandon the hypothesis and start a new research project.

Tags

NGSS.MS-LS1-5

In an experiment, the function of the dependent variable is (a)  

• the variable that is measured
• the variable that is manipulated
• the variable that can be seen
• the variable that is most common

During photosynthesis, plants convert light energy into chemical energy. The molecule primarily produced as a result of this process is (a)  

• starch
• glucose
• fructose
• sucrose

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The original source of energy for nearly all life on Earth is (a)  

• The moon
• The sun
• Plants
• Ocean currents

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Match the following characteristics with their descriptions:

• Characteristic of living things that involves reacting to stimuli

• ability to respond to the environment

• Characteristic of living things that involves producing offspring

• ability to grow

• Characteristic of living things that involves changing position or location

• ability to reproduce

• Characteristic of living things that involves increase in size and number of cells

• ability to move

Tags

NGSS.MS-LS1-5