AP Biology : AP Biology

Study concepts, example questions & explanations for AP Biology

varsity tutors app store varsity tutors android store

Example Questions

Example Question #1791 : Ap Biology

Which of the following best describes runoff?

Possible Answers:

Transformation of water from liquid to gaseous phase

The flow of water underground

The flow of water over the Earth's surface

The changing of water vapor to ice

Correct answer:

The flow of water over the Earth's surface

Explanation:

Runoff, or surface runoff, is the flow of water over the Earth’s surface. Runoff occurs when there is an excess of water on the surface due to excessive precipitation. The excessive precipitation leads to the full saturation of soil, resulting in water flowing over the surface. 

Example Question #37 : Understanding Eco Chemical Cycles

During the infiltration process of the water cycle, water travels from the ground surface to which of the following locations?

Possible Answers:

Into the soil

Into roots of a plant

Across the land

Atmosphere

Correct answer:

Into the soil

Explanation:

Infiltration is a process in the water cycle in which water on the ground’s surface enters the soil.

Example Question #1792 : Ap Biology

Which of the following best explains the difference between infiltration and subsurface flow?

Possible Answers:

In infiltration, water moves into the soil and in subsurface flow water moves below the ground surface

In subsurface flow, water moves into the soil and in infiltration, water moves below the ground surface

Infiltration takes place under the ground surface while subsurface flow takes place on the ground surface

Both infiltration and subsurface flow take place on the ground surface

Correct answer:

In infiltration, water moves into the soil and in subsurface flow water moves below the ground surface

Explanation:

Infiltration is a process in the water cycle in which water moves from the ground’s surface into the soil. Subsurface flow is another process where water flows below the ground surface; therefore, the difference between the two is the origin of the flowing water.

Example Question #39 : Understanding Eco Chemical Cycles

Evaporation is a stage in the water cycle that involves a phase change of water. Which of the following best describes this phase change?

Possible Answers:

Liquid to gas

Solid to gas

Solid to liquid

Gas to liquid

Correct answer:

Liquid to gas

Explanation:

Evaporation is one of three main stages of the water cycle. In this process, water changes phases from the liquid to the gas phase.

Example Question #1793 : Ap Biology

Which of the following is true regarding the process of sublimation?

Possible Answers:

It is the conversion of water from a solid to a gaseous state

All of these

It is an endothermic reaction

In sublimation, water doesn't pass through the intermediate liquid phase

Correct answer:

All of these

Explanation:

Sublimation is the process in which water converts from a solid to a gaseous phase without passing through the intermediate liquid phase. Sublimation is an endothermic reaction: it requires the absorption of energy in the form of heat.

Example Question #1794 : Ap Biology

Which of the following best describes the process of deposition?

Possible Answers:

It is neither the conversion of water from a gaseous to a solid phase nor is it is the opposite of sublimation

It is the opposite of sublimation

It is the conversion of water from a gaseous to a solid phase

It is both the conversion of water from a gaseous to a solid phase and it is the opposite of sublimation

Correct answer:

It is both the conversion of water from a gaseous to a solid phase and it is the opposite of sublimation

Explanation:

Deposition is the conversion of water from a gaseous to a solid phase; therefore, deposition is the opposite process of sublimation.

Example Question #72 : Ecology

Which of the following best explains what occurs in the process of advection?

Possible Answers:

The movement of water through the atmosphere

The conversion of water from a solid phase to a gaseous phase

The flow of water underground

Flow of water from the ground surface into the soil

Correct answer:

The movement of water through the atmosphere

Explanation:

Advection can be described as the movement of water through the atmosphere and it is critical to the water cycle.

Example Question #1793 : Ap Biology

Which of the following phase changes does water undergo during the process of condensation?

Possible Answers:

Gas to liquid

Liquid to gas

Solid to liquid

Liquid to solid

Correct answer:

Gas to liquid

Explanation:

Condensation is one of three stages of the water cycle. In the process of condensation, water converts from a gaseous phase to a liquid phase; thus, condensation is the opposite of the process of evaporation.

Example Question #1794 : Ap Biology

Transpiration involves the release of water vapor from which of the following components of the terrestrial biosphere?

Possible Answers:

Soil

Plants and soil

Animals

Plants

Animals and soil

Correct answer:

Plants and soil

Explanation:

Transpiration is defined as the release of water vapor from plants and soil.

Example Question #42 : Understanding Eco Chemical Cycles

Water flows through which of the following in the process of percolation?

Possible Answers:

None of these

Soil and rocks

Atmosphere

Ground surface

Correct answer:

Soil and rocks

Explanation:

Percolation is defined as the vertical flow of water through subsurface soil and rocks. Percolation is influenced by gravity.

Learning Tools by Varsity Tutors