SOL Bio Practice Unit 1

A student is investigating the effect of plants on indoor air quality and states, "If plants are added to an indoor environment, the air quality will improve." This statement is an example of -

• a theory

• a procedure

• an observation

• a hypothesis

A biologist gathered data to show the interaction of the golden-cheeked warbler and juniper tree populations. Which conclusion did the biologist most likely make from the data shown?

• As the juniper tree population increases, the golden-cheeked warbler population increases.

• The optimum habitat for the golden-cheeked warbler population is 100 juniper trees per acre.

• The golden-cheeked warbler population stabilizes when the juniper tree population increases above 120 trees per acre.

• A golden-cheeked warbler population is unable to survive if juniper trees are present.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which statement is an inference based on this information?

• Plant seeds have different shapes.

• Milkweed seeds are dispersed by wind.

• Maple seeds have a membrane-like extension.

• Burdock seeds have short, peg-like extensions.

Investigation of Robins

A student notices fewer robins in her yard during the winter.

She thinks that some robins must migrate in the winter.

She counts the robins in her yard once a week for 2 years.

She finds that there are about half as many robins in her yard in the winter as in the summer.

Her research has shown that some robins are not in her yard during winter.

Which statement best describes her hypothesis?

• A student notices fewer robins in her yard during the winter.

• She thinks that some robins must migrate in the winter.

• She counts the robins in her yard once a week for 2 years.

• Her research has shown that some robins are not in her yard during the winter.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Students use a dissolved oxygen probe during a laboratory activity involving 1,000 mL samples of pond water. The function of the probe is to -

• create a model

• test a hypothesis

• gather accurate data

• analyze investigation conditions

Tags

NGSS.MS-ETS1-3

In a population of 120 oak trees, 25% of the population has oak wilt disease. The number of oak trees in this population that have oak wilt is___________.

An insect called the hemlock woolly adelgid was introduced to a Virginia forest ecosystem. This pest feeds on the nutrients stored inside a hemlock tree, resulting in the death of the tree. Which kind of data would best help a student evaluate the effect of this insect?

• A comparison of the adelgid with native pest species

• An account of how the adelgid was introduced into Virginia ecosystems

• A list of the foreign ecosystems infiltrated by the hemlock woolly adelgid

• Information about the ecosystem's characteristics before the adelgid infestation

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

A student wanted to compare the transpiration rates of two different plant species at varying levels of humidity. The results are recorded in the table shown. Each plant group was given the same amount of water and light throughout the investigation. Which procedure should have been performed to prevent error in this investigation?

• One type of plant should have been tested

• Fewer plants should have been included in each group

• The percentage of humidity should have been kept constant

• Both groups should have been tested in the same soil type at each humidity level

Tags

NGSS.MS-ETS1-2

The jackrabbit is a desert mammal. The jackrabbit's circulatory system increases blood flow to the ears during hot days. The blood flow to the ears decreases during cool or cold nights. This circulation pattern is most directly related to -

• detoxification

• excretion

• osmosis

• homeostasis

This table was found in a journal of student research. What is the independent variable in this experimental data?

• Water

• Starch Solution

• Enzyme: Amylase

• Incubation Temperature

• Fractional Activity

Tags

NGSS.MS-PS3-4