Quiz on Symbiosis and Ecosystems

What is symbiosis?

• A relationship where one organism benefits and the other is harmed

• A relationship where both organisms are harmed

• A close relationship where there is mutual benefit and association between organisms of different species

• A relationship where one organism benefits and the other is neither helped nor harmed

What is commensalism?

• A relationship where both organisms benefit

• A relationship where one organism benefits and the other is neither helped nor harmed

• A relationship where one organism harms another for its own benefit

• A relationship where both organisms are harmed

What is the role of a predator in an ecosystem?

• To provide food for other predators

• To hunt and consume other organisms for nourishment

• To protect prey species from other predators

• To increase the population of prey species

What happens to the prey population when the number of predators increases?

• The prey population increases

• The prey population decreases

• The prey population remains the same

• The prey population fluctuates randomly

What is mutualism?

• A relationship where one organism benefits and the other is harmed

• A relationship where one organism benefits and the other is neither helped nor harmed

• A relationship where both organisms benefit

• A relationship where both organisms are harmed

What is parasitism?

• A relationship where both organisms benefit

• A relationship where one organism benefits and the other is neither helped nor harmed

• A relationship where one organism harms, but does not kill, another for its own benefit

• A relationship where both organisms are harmed

Why does competition occur in nature?

• Due to the abundance of resources

• Due to limited resources

• Due to the presence of predators

• Due to the presence of parasites

What is communication in the context of organisms?

• The exchange of food between organisms

• The exchange of genetic material between organisms

• The exchange of information between organisms using signals, sounds, scents, or visual cues

• The exchange of territory between organisms

What are examples of communication in organisms?

• Vocal signals like bird calls

• Chemical signals like pheromones

• Visual displays like mating dances in birds

• All of the above

Why do territorial animals defend and mark specific areas as their own?

• To increase competition for resources

• To reduce competition for resources and create safe zones for mating, raising young, and foraging

• To attract predators

• To increase the population of prey species