Symbiotic Relationships

What is parasitism?

• A type of symbiotic relationship where both species benefit.

• A type of symbiotic relationship where one species benefits at the expense of the other.

• A type of relationship where species compete for resources.

• A type of relationship where one species is unaffected by the other.

Example of commensalism?

• Cattle egrets feed on insects stirred up by cattle without affecting the cattle.

• Cattle graze on grass, which helps the grass grow.

• Birds build nests in trees, harming the trees.

• Fish swim alongside sharks, eating leftover food from their meals.

What is a host in a parasitic relationship?

• The organism that is harmed or used by the parasite.

• The organism that benefits from the relationship.

• The environment in which the parasite lives.

• The organism that provides shelter to the parasite.

Example of endoparasitism?

• Tapeworms that live in the intestines of their host.

• Mistletoe that grows on trees.

• Fleas that live on the skin of dogs.

• Lice that infest human hair.

What is commensalism?

• A type of symbiotic relationship where one species benefits and the other is neither helped nor harmed.

• A type of relationship where both species benefit from each other.

• A type of relationship where one species is harmed while the other benefits.

• A type of relationship that occurs between two species that do not interact.

Example of ectoparasitism?

• A mosquito that feeds on human blood.

• A cow grazing on grass.

• A bird building a nest in a tree.

• A fish swimming in the ocean.

What is ectoparasitism?

• A form of parasitism where the parasite lives on the outside of the host.

• A type of symbiosis where both organisms benefit.

• A condition where parasites live inside the host's body.

• A mutualistic relationship between two different species.

Example of mutualism?

• A wrasse fish feeds on parasites found on a black sea bass, benefiting both species.

• A lion hunts a zebra for food, benefiting only the lion.

• A bee pollinates a flower while collecting nectar, benefiting only the bee.

• A bird builds a nest in a tree, harming the tree in the process.

What is a symbiotic relationship?

• A close and long-term interaction between two different species.

• A competition between two species for the same resources.

• A relationship where one species benefits at the expense of another.

• A random interaction between two unrelated species.

How do symbiotic relationships affect ecosystems?

• They contribute to biodiversity, stability, and the functioning of ecosystems.

• They lead to increased competition among species.

• They reduce the availability of resources for other organisms.

• They have no significant impact on ecosystem dynamics.