Bi-Weekly #5

The picture shows a honeybee on a flower. Honeybees travel from flower to flower gathering nectar to eat. Pollen from the flowers sticks to the honeybees and is carried between flowers, which helps the flowers reproduce. What is the relationship between honeybees and flowers an example of? Why?

• mutualism because both the bee and the flower benefit

• parasitism because the bee benefits and the flower is harmed

• predator-prey because both the bee and the flower are harmed

• commensalism because the bee benefits and the flower is unharmed

Tags

NGSS.MS-LS1-4

The graph shows the changes in population size of wolves and rabbits living in an ecosystem. Which type of relationship is most likely represented in the graph?

• The relationship is predator–prey where species X represents the wolves, and species Y represents the rabbits.

• The relationship is predator–prey where species X represents the rabbits, and species Y represents the wolves.

• The relationship is commensalism where species X represents the rabbits, and species Y represents the wolves.

• The relationship is commensalism where species X represents the wolves, and species Y represents the rabbits.

The picture shows a desert environment. The cacti in this environment survive by spreading out and growing apart from one another. Why do the cacti grow this way?

• to prevent the plants from blocking the sunlight from each other

• to prevent the plants from competing for water and nutrients

• to prevent insects from eating the entire plant population

• to prevent harmful diseases passing between the plants

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The picture shows a cross section of a garden. Based on the picture, which statement about plants and earthworms in this garden is true?

• Earthworms are harmful to the roots of plants because they remove nutrients and water from the soil, which plants need to produce food.

• The plants use oxygen from the soil to produce food, and the earthworms use carbon dioxide released by the plants to produce energy.

• Earthworms loosen and fertilize the soil near the roots, which helps the roots of the plants get nutrients and water from the soil.

• The plants serve as food for the earthworms for energy, and the earthworms then give this energy to the plants in the garden.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

A diagram of a marine ecosystem is shown. What is the primary source of energy for this ecosystem and why?

• the Sun because it supplies the light energy that producers use to create food

• seals because they eat both the producers and consumers in the ecosystem

• seaweed because all of the consumers in the ecosystem get their energy from eating it

• the ocean because it receives the most energy that is lost from the organisms as heat

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Coral reefs are made of living colonies of coral. The coral build the reef by producing a solid, calcium carbonate exoskeleton, usually at the rate of several millimeters a year. Many plants and animals make their home within the coral: eating one another, reproducing, and producing substances to maintain a number of interactions. Which best describes the outcome of these interactions?

• the continuous gain in matter and energy of the reef

• the continuous loss of matter and energy from the reef

• the continuous transfer of matter and energy in and around the reef

• the continuous exchange of matter and energy between the reef and ocean floor

Tags

NGSS.MS-LS2-3

The picture shows a group of aphids on the leaf of a plant. Aphids are insects that feed on the sap of plants. Aphids can destroy a healthy plant by removing all of its sap, or introducing disease to the plant. Which statement best describes the type of relationship that exists between aphids and the plant?

• The relationship is mutualism because both the aphids and plant receive a benefit.

• The relationship is predator–prey because both the aphids and the plant are harmed.

• The relationship is parasitism because the aphids receive a benefit and the plant is harmed.

• The relationship is commensalism because the aphids receive a benefit while the plant is unharmed.

Tags

NGSS.MS-LS2-4

The picture shows a cattle egret bird on the back of a buffalo. The cattle egret eats the insects that are disturbed by the buffalo while it grazes. Which term best describes the relationship between the cattle egret and the buffalo?

• parasitism

• mutualism

• predator–prey

• commensalism

Coral reefs are made of living colonies of coral. The coral build the reef by producing a solid, calcium carbonate exoskeleton, usually at the rate of several millimeters a year. Many plants and animals make their home within the coral: eating one another, reproducing, and producing substances to maintain a number of interactions. Which best describes the outcome of these interactions?

• the continuous gain in matter and energy of the reef

• the continuous loss of matter and energy from the reef

• the continuous transfer of matter and energy in and around the reef

• the continuous exchange of matter and energy between the reef and ocean floor

Tags

NGSS.MS-LS2-3

A diagram of an ecosystem is shown. Which interaction in the ecosystem is a parasite−host relationship?

• mouse and wolf

• louse and hawk

• snake and grasshopper

• butterfly and green shrub