Front

Barnacles attach to a turtle's shell, gaining a place to live while the turtle is unaffected. What type of relationship is this?

Back

One organism benefits, the other is neither helped nor harmed

Answer explanation

In commensalism, one organism benefits while the other is neither helped nor harmed. This distinguishes it from mutualism, where both benefit, and parasitism, where one is harmed.

Front

Which pair of organisms is most likely to have a parasitic relationship?

Back

Tapeworm and human

Answer explanation

The tapeworm and human pair exemplifies a parasitic relationship, where the tapeworm lives in the human's intestines, absorbing nutrients at the host's expense, causing harm. The other pairs represent mutualism or commensalism.

Front

Why are symbiotic relationships like bees pollinating flowers and birds eating insects off animals important in ecosystems?

Back

They help maintain balance and support survival of different species

Answer explanation

Symbiotic relationships are crucial as they help maintain ecological balance and support the survival of various species by providing mutual benefits, such as food, protection, and resources, which enhances biodiversity.

Front

What type of symbiotic relationship is it when ants protect aphids from predators, and in return, aphids provide ants with a sugary substance?

Back

Mutualism, because both ants and aphids benefit

Answer explanation

The relationship is mutualism because both ants and aphids benefit. Ants protect aphids from predators, while aphids provide ants with a sugary substance, creating a mutually beneficial interaction.

Front

What type of symbiotic relationship is it when a bird builds its nest in a tree without harming or benefiting the tree?

Back

Commensalism, because the bird benefits and the tree is unaffected

Answer explanation

The correct answer is Commensalism, as the bird benefits from the nest while the tree remains unaffected. This relationship shows that one organism gains without harming or helping the other.

Front

A scientist notices that a certain fungus grows on the roots of plants and helps the plant absorb water, while the plant provides food for the fungus. What reasoning supports classifying this as mutualism?

Back

Both the plant and fungus benefit from each other

Answer explanation

This relationship is classified as mutualism because both the plant and the fungus benefit: the fungus helps the plant absorb water, while the plant provides food for the fungus.

Front

A remora fish attaches itself to a shark and eats leftover food scraps, but the shark is not affected. What type of symbiotic relationship is this?

Back

Commensalism, because the remora benefits and the shark is unaffected

Answer explanation

The relationship between the remora fish and the shark is commensalism. The remora benefits by eating scraps, while the shark remains unaffected, making this a clear example of one species benefiting without harming the other.

Front

Prisha claims that all symbiotic relationships are beneficial to both organisms. How would you respond?

Back

Disagree, because some symbiotic relationships, like parasitism, harm one organism

Answer explanation

Disagree, because not all symbiotic relationships are beneficial. For example, parasitism harms one organism while benefiting another, showing that some symbiotic interactions can be detrimental.