Biology Final Exam

Front

In the water cycle, the sun provides

Back

energy for water to evaporate from oceans, lakes and rivers.

Answer explanation

The sun provides energy that heats water in oceans, lakes, and rivers, causing it to evaporate. This process is essential for the water cycle, making the correct answer "energy for water to evaporate from oceans, lakes and rivers."

Front

The water cycle has

Back

no beginning and no end.

Answer explanation

The water cycle is a continuous process of evaporation, condensation, and precipitation, with no defined start or end point. Therefore, the correct answer is c) no beginning and no end.

Front

How many main steps does the water cycle have?

Back

4

Answer explanation

The water cycle consists of 4 main steps: evaporation, condensation, precipitation, and collection. These processes continuously circulate water in the environment, making 4 the correct answer.

Front

During which stage do clouds form?

Back

condensation

Answer explanation

Clouds form during the condensation stage when water vapor cools and changes back into liquid droplets, creating clouds. This process is essential in the water cycle, distinguishing it from evaporation and precipitation.

Front

When plants give off water vapor as a waste product, it is called:

Back

Transpiration

Answer explanation

When plants release water vapor, it is known as transpiration. This process helps regulate temperature and maintain water balance in plants, distinguishing it from photosynthesis, respiration, and germination.

Front

Look at the diagram. What process is being shown on the leaf?

Back

transpiration

Answer explanation

The process shown on the leaf is transpiration, which is the release of water vapor from plant leaves into the atmosphere. This is a crucial part of the water cycle and helps in nutrient transport within the plant.

Front

This is a picture of Options: hail, snow, rain, fog

Back

hail

Answer explanation

The image depicts hail, which consists of ice pellets that form in thunderstorms. Unlike snow, which is frozen water crystals, hail is characterized by its solid ice structure and typically occurs during severe weather.

Front

Why does groundwater usually require less treatment than surface water?

Back

As groundwater sinks into the ground, the layers of soil and rock filter out impurities

Answer explanation

Groundwater usually requires less treatment than surface water because, as it sinks into the ground, layers of soil and rock act as natural filters, removing impurities effectively.

Front

During which stage does water flow back towards the sea as runoff? Options: W, Y, Z, X

Back

Z

Answer explanation

In the water cycle, runoff occurs when water flows over the ground and returns to bodies of water like seas. This stage is represented by Z, where water collects and moves back towards the sea.

Front

Which factor is responsible for different forms of precipitation?

Back

Temperature

Answer explanation

Temperature determines whether precipitation falls as rain or snow. Warmer temperatures lead to rain, while colder temperatures result in snow, making it the key factor in the form of precipitation.