Ecological Interactions and Nutrient Cycling

The video discusses interactions between organisms, which can be direct or indirect, and have positive or negative impacts. Direct interactions include cooperative types like mutualism and endosymbiosis, and defective types like exploitation. Indirect interactions involve nutrient cycling as a positive impact and exploitative competition as a negative impact.

What are the two main types of interactions between organisms?

• Mutual and exploitative

• Cooperative and competitive

• Positive and negative

• Direct and indirect

Which of the following is an example of a cooperative interaction?

• Mutualism

• Parasitism

• Competition

• Predation

Which of the following is NOT a type of cooperative interaction?

• Microbial consortia

• Mutualism

• Exploitative competition

• Endosymbiosis

What term describes a relationship where one organism benefits and the other is harmed?

• Mutualism

• Commensalism

• Parasitism

• Symbiosis

Which interaction involves one organism eating another?

• Predation

• Commensalism

• Symbiosis

• Mutualism

In nutrient cycling, what process makes nutrients available to other organisms?

• Decomposition

• Photosynthesis

• Mineralization

• Respiration

What is a characteristic of positive indirect interactions?

• Nutrient availability

• Resource competition

• Nutrient depletion

• Direct contact between organisms

What is exploitative competition?

• Direct fighting for resources

• Avoiding competition

• Indirect competition for resources

• Sharing resources equally

What happens when two organisms' ecological niches overlap too much?

• They form a mutualistic relationship

• One may go extinct

• They both thrive

• They avoid each other

What is the result of effective resource utilization in overlapping niches?

• One organism outcompetes the other

• Stable coexistence

• Resource abundance

• Increased biodiversity