Ecology Test

Which of the following scenarios best illustrates the concept of a niche?

• A lion hunting a zebra in the savannah

• A bee pollinating flowers in a garden.

• A fish swimming in a pond.

• A bird building a nest.

If a new species of herbivore is introduced into an ecosystem, which of the following is the most likely immediate effect on the primary consumers?

• Increase in population due to more food availability.

• Decrease in population due to competition for food.

• No change in population.

• Increase in biodiversity.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following would be an abiotic factor in an aquatic environment?

• Fish

• Sand

• Snails

• Sea kelp

Which of these statements best describes a niche in an ecosystem

• The role of a species in its population

• The role of a species in its community

• The way a species uses the resources and its habitat

• The way a species interacts with other species in its habitat

A spider hides in an orchid flower. It captures and eats insects as they enter the flower. How could this be an example of mutualism?

• If the spider is also eating part of the flower

• If the spiders actions do not affect the orchid plant

• If the insects that the spider captures are harming the flower

• If the insects that the spider captures are pollinating the flower

Tags

NGSS.MS-LS2-2

Green plants use energy from the sun to produce food during the process of photosynthesis. This food provides energy to an entire food chain. What starting materials do the plants use to make this food?

• Soil and water

• Water and oxygen

• Carbon dioxide and water

• Water, phosphorus, and nitrogen

Tags

NGSS.MS-LS1-6

Why are decomposers an essential part of a healthy ecosystem?

• Decomposers are a necessary part of the diet of most consumers

• Decomposers convert plant material into a form that primary consumers can use

• Decomposers make resources to producers by breaking down waste materials

• Decomposers extract energy from sunlight as they breakdown plant materials, adding returning energy to the system

Tags

NGSS.MS-LS2-3

A scientist is studying a population of elephants contained in an animal preserve. Which of the following must be true, if the size of the population is increasing?

• The birth rate has dropped to zero

• The birth rate is equal to the death rate

• The death rate is greater than the birth rate

• The birth rate has become greater than the death rate

Tags

NGSS.MS-LS2-4

Which of the following best describes what scientist consider when they study ecology?

• The interactions of organisms with their environment

• The interaction of organisms with weather and climate

• The interactions of organisms reproduce and produce offspring

• The interactions of organisms with one another environment

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of the following determines where a population can live?

• Whether its needs or met by the biotic factors and the habitat

• Whether it’s needs or met by the abiotic factors in the habitat

• Whether it needs or met by the abiotic and biotic factors in the habitat

• Whether it needs or met by the other populations of organisms in the habitat

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4