Ecological Relationships and Population Dynamics

The video tutorial by Mrs. Ksing discusses the relationships between different organisms, focusing on symbiosis, which includes mutualism, parasitism, and commensalism. Mutualism benefits both species, exemplified by bees and flowers. Parasitism benefits one species at the expense of another, like ticks and humans. Commensalism benefits one species without affecting the other, as seen with birds nesting in trees. The video also covers predator-prey dynamics, using lions and gazelles as examples, and explains how population oscillations occur due to these interactions.

What is the term used to describe a relationship between two different species?

• Mutualism

• Commensalism

• Parasitism

• Symbiosis

In a mutualistic relationship, how do both organisms benefit?

• One organism benefits, the other is unaffected

• One organism benefits, the other is harmed

• Both organisms benefit

• Neither organism benefits

Which of the following is an example of mutualism?

• A tick on a human

• A bird nesting in a tree

• A bee and a flower

• A lion hunting a gazelle

What is the main characteristic of parasitism?

• Both organisms benefit

• One organism benefits, the other is harmed

• Neither organism benefits

• Both organisms are harmed

Which relationship is beneficial for one organism and neutral for the other?

• Mutualism

• Commensalism

• Predation

• Parasitism

In a predator-prey relationship, what happens when the prey population increases?

• The predator population decreases

• The prey population remains constant

• The predator population increases

• The prey population decreases

What is the role of a predator in a predator-prey relationship?

• To provide food for the prey

• To be eaten by the prey

• To hunt and eat the prey

• To live symbiotically with the prey

What happens to the prey population if the predator population increases significantly?

• The prey population decreases

• The prey population increases

• The prey population remains constant

• The prey population becomes extinct

What is the term for a population growth pattern where resources are unlimited?

• J-curve

• Exponential decay

• Linear growth

• S-curve

What can cause a population to oscillate in a predator-prey relationship?

• Constant food supply

• Stable environmental conditions

• Cyclical changes in predator and prey numbers

• Lack of predators