Unit Check

Woodpeckers, raccoons, hawks, and bacteria are some of the different types of organisms living in a forest. At what level of organization can a study of interactions among these organisms be done?

• community
• niche
• population
• species
  

Tags

NGSS.MS-LS2-2

Study the diagram showing two organisms. Which statement best describes a niche for one of the organisms?

• The tree and bird both compete for oxygen.
• The tree provides shelter for the bird and uses water from the soil.
  
• The bird and tree both exist in the same ecosystem.
  
• The bird adapts to the tree each season as the tree loses or grows leaves.
  

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

What is the relationship between particle size and permeability?

• As particle size increases, the permeability decreases.
• As particle size increases, the permeability increases.
• As permeability decreases, the particle size decreases.
  
• As permeability increases, the particle size remains constant.
  

Which organism is a link between an aquatic food web and a terrestrial food web?

• clam
• dolphin
• penguin
• shark
  

Tags

NGSS.MS-LS2-2

Which characteristic distinguishes a population from higher levels of organization?

• The organisms live in different areas.
  
• The organisms can breed with each other.
  
• The organisms compete with each other for food.
  
• The organisms depend on each other for survival.
  

The table gives details of soil samples collected from different regions. Which soil sample would have the most gritty texture?

• loam
• sandy clay loam
• silt loam
• clay
  

Which sequence categorizes the five levels of ecological organization from least inclusive to most inclusive?

• biosphere, ecosystem, population, community, organism
  
• ecosystem, biosphere, community, population, organism
  
• organism, community, population, ecosystem, biosphere
  
• organism, population, community, ecosystem, biosphere
  

The diagram shows a forest environment and several organisms that live there. If rainfall in the area is less than expected, what is the most likely result on the ecosystem?

• More deer and rabbit will immigrate into the area.
  
• Water will become a limiting factor for all organisms.
  
• The birth rate will increase for the rabbit and bird population.
  
• The organisms will adapt in order to survive with less water.
  

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The table shows the various levels of organization of organisms on Earth.
Which order represents the relationship among these levels of organization?

• Z, X, Y, W
• Y, X, W, Z
• W, Z, X, Y
• X, Y, W, Z

Tags

NGSS.MS-LS2-2

Heavy floods bring eroded soil, dirt, and debris into a river, increasing the turbidity and the temperature of the water. What effect does increasing turbidity have on aquatic life forms?

• Muddy water will make it easier for predators to find food.
  
• Warmer water will help fish reproduce.
  
• An decrease in nutrients will help plants grow.
  
• A lack of sunlight will make it difficult for plants to grow.
  

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS1-6