8.11a

How does this chemical help black walnut trees compete with plants growing nearby?

• By attracting herbivores to the other plants

• By suppressing the growth of the other plants

• By increasing the photosynthesis rates in the other plants

• By limiting the amount of water available to the other plants

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

The Prairies Region and the Cross Timbers are located in north-central Texas. The graph below shows information about eating habits of white-tailed deer in these regions. A Cross Timbers rancher is concerned about competition between the ranch animals and the deer. Based on the graph, which ranch animals compete for the most food with white-tailed deer?

• Cattle that eat grass and feed

• Goats that eat weeds and shrubs

• Turkeys that eat seeds and fruit

• Hogs that eat fruit, seeds, and feed

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Fish in a lake have to compete for space. Different fish have different optimal temperature ranges. The graph below shows the temperature ranges of four fish species. At which temperature range will there be the most competition for space among these fish species?

• 5°C to 10°C

• 10°C to 15°C

• 15°C to 20°C

• 25°C to 30°C

Tags

NGSS.MS-LS2-1

Which organisms in the food web shown above compete for the same food source in this environment?

• Grasshoppers and snakes

• Hawks and frogs

• Frogs and snakes

• Decomposers and grasses

Tags

NGSS.MS-LS2-1

The Couch’s spadefoot lives in Texas and has the characteristics listed below.

The Couch’s spadefoot is adapted to a certain type of environment. Which of these resources is most likely scarce in this environment?

• Soil

• Sunlight

• Water

• Oxygen

Tags

NGSS.MS-LS2-1

Animals from two different species utilize the same source of nutrition in one area. It is most accurate to say that the animals…

• will learn to get along

• will compete for food

• will die because there will not be enough food for both of them

• will learn to eat different foods

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

This diagram shows the variety of organisms that live in different tide zones. Mussels are common organisms that compete for space in intertidal (middle) tide zones. If all of the mussels were removed from zone A, which organisms would likely compete for the space in Zone A?

• Periwinkle and Limpets

• Sea lettuce and Chiton

• Sea urchins and Hermit crabs

• Rock louse and Periwinkle

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

True or False. In this Food Web Pyramid which type of consumer gets only 10% of the energy stored in plants? Careful!

• Herbivore

• Carnivore

• Omnivore

• Secondary Consumer

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

• There would be a decrease in the small bird population.

• There would be a decrease in the grass/flowers population.

• There would be a decrease in the mice population.

• There would be an increase in the grass/flowers population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What is the primary function of the mitochondria in a cell?

• To store genetic information

• To produce energy

• To synthesize proteins

• To protect the cell

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5