Organism Relationships and Interactions

The video tutorial explores various relationships among organisms, focusing on symbiotic relationships such as parasitism, commensalism, and mutualism. It explains how organisms interact within communities, highlighting the importance of these interactions for survival. The tutorial also covers predation, where one organism consumes another, emphasizing the competitive nature of ecosystems.

What is the primary focus of the lesson on relationships among organisms?

• The independence of organisms

• The isolation of species

• The competition among humans

• The interconnectedness of organisms

Which of the following is NOT a type of symbiotic relationship?

• Parasitism

• Commensalism

• Mutualism

• Predation

In a parasitic relationship, what happens to the host organism?

• It is harmed by the parasite

• It benefits from the parasite

• It forms a mutual benefit with the parasite

• It is neither harmed nor helped

Which relationship involves one organism benefiting at the expense of another?

• Mutualism

• Commensalism

• Parasitism

• Predation

Which example best illustrates commensalism?

• A clownfish living among sea anemones

• A lion hunting a zebra

• Algae and fungi forming lichens

• A tick feeding on a dog

What is the main difference between parasitism and commensalism?

• Parasitism harms one organism, while commensalism benefits both

• Parasitism and commensalism both harm one organism

• Parasitism harms one organism, while commensalism does not affect one

• Parasitism benefits both organisms, while commensalism harms one

What is the key characteristic of mutualism?

• One organism benefits while the other is harmed

• Both organisms benefit

• Both organisms are harmed

• One organism benefits while the other is unaffected

Which of the following is an example of mutualism?

• A tick on a dog

• A lion hunting a zebra

• A clownfish and a sea anemone

• Lichens formed by algae and fungi

In the context of community interactions, what does predation involve?

• Two organisms benefiting each other

• One organism benefiting while the other is unaffected

• Both organisms being harmed

• One organism pursuing and consuming another

What is a common example of predation in nature?

• A tick on a dog

• A clownfish and a sea anemone

• A bear catching a fish

• Algae and fungi forming lichens