LEAP 2025 Biology Pre Test

### LEAP 2025 Biology Pre Test Sample

Standard: HS-LS-2-1 DOK: 1 1pt
2.

Use the diagram and your scientific knowledge to complete the question. Select the correct answer to complete the sentences

The Energy pyramid below shows how energy is transferred from one trophic level to another.

Part A

The trophic level containing the least amount of biomass is

Standard: HS-LS-2-4 DOK: 1 1pt
.

Part B

If the biomass of the producers decreased, the organisms in the other trophic levels would

Standard: HS-LS-1-5, HS-LS-1-6, HS-LS-1-7 DOK: 1 1 pt
8.

Compare Photosynthesis and Cellular Respiration. Drag the correct answer into each box to complete the table.

Energy storage

Mitochondria

CO2 and H2O

CO2, H2O, and Light

6O2 + C6H12O6 $\to$ 6CO2 $\to$ 6H2O + energy

Standard: HS-LS-1-7 DOK: 1 1 pt
29.

A freshwater plant has an internal concentration of 1.2 g/ml. It is placed in a salt marsh that has a concentration of 12 g/ml.

Select the correct answer. Which best predicts the direction water will move across the plant cell wall and the effect of that movement on the plant?

Standard: HS-LS-1-3 DOK: 1 1 pt
31.

A biology student made the diagram below. Select the correct answer for the box, which best describes the group of people.

Standard: HS-LS-4-1, HS-LS-4-4 DOK: 1 1 pt
41.

To learn how species are related, scientists can compare structures found in the species to find similarities. The skulls shown are from four different animals.

Select the correct answer. Which two animals are the most closely related?