In this food web, what would happen if the zebra population declined due to a disease? (See Attached Diagram)

There would be more competition among the lions, hyenas, and cheetahs.

The grass population would decrease.

The giraffe population would decrease.

Baboons would have a food shortage.

An increase in the population of an organism would most likely be associated with which of the following?

An expansion of suitable living space

A series of severe weather events in the habitat

A decrease in necessary resources available

An increase in animals that prey on the organism

What data would be most helpful to support the claim that the population of a certain plant is dependent on the rainfall in its habitat?

Rainfall amounts and number of these plants in a certain habitat over several years

The average amount of water absorbed by the roots and given off by the leaves of these plants

The amount of water retained in the soil in the area where the plants live

The heights and number of leaves produced by these plants under different moisture conditions

The milkweed plant serves an important role in the life cycle of the monarch butterfly. Adult monarchs lay their eggs in milkweed, and then caterpillars eat that same plant during their development. Based on the relationship between monarchs and milkweed, which of the following trends would be predicted when looking at data on the populations of these two organisms?

Population decrease in monarch butterflies should follow population decrease in milkweed.

Population of monarch butterflies should remain constant when milkweed population decreases.

Population increase in monarch butterflies should follow population decrease in milkweed.

Population of milkweed should remain constant when monarch butterfly population increases.

Take a look at the attached graph. It shows the change in population size of two populations living in the same environment: rabbits and lynx. Lynx are a species of wildcat. Carefully analyze how the increase and decrease in population size of one affect the other. Does this graph show that these populations are competing for the same resources or that they are in a predator-prey relationship?

As the population of one specie increases , the other specie's population decreases showing they are in a predator-prey relationship.

As the population of one specie increases , the other specie's population decreases showing they are competing for the same resources.

As the population of one specie decreases , the other specie's population decreases showing they are in a predator-prey relationship.

As the population of one specie decreases , the other specie's population decreases showing they are competing for the same resources.

There are several different types of symbiotic relationships. In this case, a tick attaches to an animal and feeds on its blood. Ticks need blood at every stage of their life cycle. Ticks can also spread disease to the animals when they penetrate the animal's skin while sucking its blood. What type of symbiotic relationship is this? Explain.

Parasitism. The tick derives benefit while the dog is harmed.

Predation. The tick is predator while the dog is its prey.

Commensalism. The tick derives benefit but the dog is not harmed.

Mutualism. Both animals are potentially harmed in the relationship

Increased food supplies in an ecosystem decrease competition because the competing organisms would...

store large quantities of food.

have more space in which to live.

In Africa, as the crocodile lies with its mouth open, the plover, or crocodile bird, flies into its mouth and feeds on bits of meat stuck in the crocodile’s teeth. The crocodile does not harm the plover. The plover gets a meal and the crocodile gets his teeth cleaned. What conclusions might be drawn regarding the dynamics of this relationship?

It is a mutualistic relationship because both animals benefit; neither animal is harmed.

It is a symbiotic relationship because the plover benefits from the meat in the crocodile's teeth..

The crocodile is a predator. The plover is a parasite. There are two relationships illustrated by this dynamic.

It is an example of commensalism because the plover benefits from the relationship while the crocodile is neither helped or harmed.

If you take out one level of an energy pyramid....

....the levels above and below will be affected.

...the level above will be affected.

...the level below will be affected.

...nothing will happen as animals will find other sources of food.

Which definition best fits the term habitat?

the environment in which an organism lives.

The study of the interactions between animals and their environment

Factors in the environment that are considered not alive

Factors in the environment that are considered living or the remains of living things

The role a species plays in the ecosystem.

The arrows in a food chain or web represents what?

They show what direction the energy is flowing between organisms.

They point to the organism that is being eaten.

It shows how sunlight flows within an ecosystem.

They represent how water is transferred within a habitat.

What is a trophic level?

Each level represented within a food chain or web.

Levels of ecosystems that the world is divided into.

Different levels of nutrients present within an organism.

The levels of sunlight an autotroph needs to survive.

An energy pyramid represents what?

The amount of energy available to the next 'feeder' in a food web.

How much sunlight is available for the ecosystem to use.

How much energy a particular organism needs.

How much energy is needed to build a pyramid.

The study of the relationships between living organisms and their environment

The study of the relationship between living organisms & other living organisms

The study of the relationship between dead & living organisms

The study of relationships between biotic and biotic organisms

Interactions in the Ecosystems

Authored by Charles Martinez

Science

7th Grade

NGSS covered

Used 2+ times

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50 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which ecosystem would be least affected by a severe drought lasting five years straight?

Grassland

Rainforest

Desert

All ecosystems would be affected equally.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Use the food web to answer the following question: What could be the cause of a decrease in the population of bass?

(See Attached Diagram)

An increase in the snail population

An increase in the snapper turtle population

An increase in the population of sunfish

An increase in the minnow population

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Biotic

Living or produced by living things

A group of interacting individuals of the same species located in the same area

A single, self-contained living thing

Multiple systems working together to accomplish various tasks

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Population

Relationships between an organism or population and abiotic factors

How all of the living and nonliving things in an area interact

A group of interacting individuals of the same species located in the same area

Not living or produced by living things

Tags

NGSS.MS-LS4-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How all of the living and nonliving things in an area interact

Abiotic

Biotic

Organism

Ecosystem

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What abiotic factors influence the relationships of organisms in ecosystems?

Sunlight, rainfall, and plant growth

Sunlight, rainfall, and invasive species

Sunlight, weather, and human interaction

Sunlight, weather, and soil composition

Tags

NGSS.MS-LS2-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Not living or produced by living things

Organism

Ecosystem

Abiotic

Interdependent interactions

Tags

NGSS.MS-ESS2-4

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Interactions in the Ecosystems

Which ecosystem would be least affected by a severe drought lasting five years straight?

Use the food web to answer the following question: What could be the cause of a decrease in the population of bass?(See Attached Diagram)

Biotic

Population

How all of the living and nonliving things in an area interact

What abiotic factors influence the relationships of organisms in ecosystems?

Not living or produced by living things

Which is NOT a biotic factor that influences the relationships of organisms in ecosystems?

In this food web, what would happen if the zebra population declined due to a disease?(See Attached Diagram)

Organism

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Discover more resources for Science

Use the food web to answer the following question: What could be the cause of a decrease in the population of bass?

(See Attached Diagram)

In this food web, what would happen if the zebra population declined due to a disease?

(See Attached Diagram)