Species Interactions

Open Ended

How might a species benefit from having a broad range of tolerance to environmental variation?

Multiple Choice

Why is it important for organisms to interact with their environments?

• Because it helps them survive and adapt to changes

• Because it makes them more visible to predators

• Because it reduces their chances of reproduction

• Because it increases competition among species

Multiple Choice

Which of the following best describes the difference between a habitat and a niche?

• Habitat is the place an organism lives; niche is the role it plays in its environment.

• Habitat is the role an organism plays; niche is the place it lives.

• Habitat and niche mean the same thing.

• Habitat is only for animals; niche is only for plants.

Open Ended

Explain how the physical characteristics of a habitat can influence the organisms that live there.

Multiple Select

Which of the following are aspects of an organism's niche?

• The functional role it has in its surroundings

• The location where it lives

• Ways it affects other organisms

• How it modifies its physical surroundings

Multiple Choice

Which of the following is a habitat?

• Meadow/Forest

• Bee pollinating flowers

• Beaver building dam

• All of the above

• None of the above

Open Ended

What is symbiosis?

Multiple Choice

Which of the following best describes the difference between a parasite and a host in a parasitic relationship?

• The parasite benefits while the host is harmed.

• Both the parasite and host benefit equally.

• The host benefits while the parasite is harmed.

• Neither the parasite nor the host is affected.

Multiple Select

Which of the following statements about parasites is/are correct? There may be more than one answer.

• Parasites can live in different hosts at different life stages.

• All parasites kill their hosts.

• Some parasites act as vectors for diseases.

• Parasites always benefit the host.

Open Ended

Explain why it is not in the parasite’s best interest to kill its host.

Hotspot

Tapeworm and Dogfish Shark: A tapeworm lives in the intestines of a dogfish shark and takes nutrients from the shark. As a result, the shark is weakened and more vulnerable to disease and predators.

Hotspot

Anemone Hermit Crab and Anemones: The crab attaches several anemones to its shell using them as camouflage and as a deterrent to potential predators. The anemones have a "mobile home" and get more exposure to food than if they remained stationary.

Match

Match the following

• Ticks will feed on deer's blood and harm the deer.

• Wrasse fish feed on the parasites found on the black sea bass's body. The wrasse fish gets a meal and the black sea bass is helped by the removal of the parasites.

• Hermit crabs live in shells made and then abandoned by snails.

parasitism

mutualism

commensalism

• parasitism

• mutualism

• commensalism

Labelling

Label the correct relationship.

Drag labels to their correct position on the image

Mutualism

Commensalism

Parasitism

Match

Match the following

• mutualism

• commensalism

• parasitism

• competition

• +/+

+/0

+/-

-/-

• • +/+

• +/0

• +/-

• -/-

Hotspot

Mosquitos and Humans: Mosquitoes find a human and feast upon their blood. This causes a small reaction on the human's skin, resulting in a red, itchy bump. In addition, mosquitoes can pass along diseases to their human host.

Hotspot

Maribou Stork and Bees: The stork uses its saw-like bill to cut up the dead animals it eats. As a result, the dead animal carcass is accessible to bees for food and egg-laying.

Multiple Choice

Which of the following best describes the difference between a fundamental niche and a realized niche?

• A fundamental niche is the set of resources a species could potentially use, while a realized niche is the set of resources it actually uses due to competition.

• A realized niche is the set of resources a species could potentially use, while a fundamental niche is the set of resources it actually uses.

• A fundamental niche is always smaller than a realized niche.

• A realized niche is unaffected by competition.

Multiple Choice

What type of niche are organisms more likely to live in?

• Functional Niche

• Realized Niche

Open Ended

Explain how resource partitioning can reduce competition among species, using the example of the woodpeckers shown in the image.

Multiple Select

Which of the following are defensive traits that have evolved in response to predator-prey interactions?

• Camouflage

• Mimicry

• Warning coloration

• Resource partitioning

Match

Match the following:

• Symbiosis

• Mutualism

• Parasitism

• Commensalism

• Predation

Interaction between 2 different organisms living in close physical association

Relationship between 2 organisms where both species benefit

Relationship between 2 organisms where one species benefits and the other is harmed (not killed)

Relationship between 2 organisms where one species benefits and the other is not affected

A relationship in which one organism consumes another for food

• Interaction between 2 different organisms living in close physical association

• Relationship between 2 organisms where both species benefit

• Relationship between 2 organisms where one species benefits and the other is harmed (not killed)

• Relationship between 2 organisms where one species benefits and the other is not affected

• A relationship in which one organism consumes another for food