Interactions between Living Organisms

What is a symbiotic relationship?

• A symbiotic relationship is a short-term interaction between two species.

• A symbiotic relationship is a relationship where only one species benefits.

• A symbiotic relationship is a relationship where one species benefits and the other is harmed.

• A symbiotic relationship is a close and long-term interaction between two different species where both species benefit from the relationship.

Give an example of mutualism in nature.

• Bees and flowers

• Dogs and cats

• Lions and zebras

• Trees and sunlight

Explain the difference between parasitism and commensalism.

• Commensalism involves competition between organisms.

• In parasitism, both organisms benefit equally.

• In commensalism, one organism benefits at the expense of the other.

• In parasitism, one organism benefits at the expense of another, while in commensalism, one organism benefits and the other is neither helped nor harmed.

How do predators help in maintaining the balance of an ecosystem?

• Predators control the population of prey species, preventing overgrazing or overpopulation.

• Predators have no impact on the balance of an ecosystem.

• Predators contribute to the decline of the ecosystem by consuming too many resources.

• Predators help prey species thrive by providing them with food and shelter.

Describe the relationship between bees and flowers.

• Bees pollinate flowers by transferring pollen while collecting nectar.

• Flowers attack bees to protect themselves.

• Bees and flowers have no interaction.

• Bees eat flowers for sustenance.

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What is competition in an ecosystem? Provide an example.

• Competition in an ecosystem is the absence of any interaction between organisms. For example, animals living in complete isolation from each other.

• Competition in an ecosystem is the struggle between organisms for resources. An example is two bird species competing for the same nesting site.

• Competition in an ecosystem is when organisms work together to survive. For example, a lion and a zebra cooperating to find food.

• Competition in an ecosystem is the peaceful coexistence of all organisms. For example, plants sharing sunlight without any struggle.

How do decomposers contribute to the ecosystem?

• Decomposers contribute to the ecosystem by recycling nutrients.

• Decomposers contribute to the ecosystem by causing pollution.

• Decomposers contribute to the ecosystem by disrupting the food chain.

• Decomposers contribute to the ecosystem by depleting nutrients.

Discuss the role of food chains in showing interactions between living organisms.

• Food chains are not affected by environmental factors.

• Food chains demonstrate the interactions between living organisms by depicting the transfer of energy and nutrients from producers to consumers and decomposers.

• Food chains are static and do not change over time.

• Food chains only involve interactions between producers and consumers.

Explain the concept of a predator-prey relationship.

• A predator-prey relationship is when two organisms mutually benefit from each other's presence.

• A predator-prey relationship involves plants competing for sunlight.

• A predator-prey relationship involves one organism hunting and consuming another organism for food.

• A predator-prey relationship is solely based on cooperation between species.

Why is it important for living organisms to interact with each other in an ecosystem?

• Living organisms interact in an ecosystem to isolate themselves and avoid any connections.

• Living organisms interact in an ecosystem to create chaos and disrupt the environment.

• Living organisms interact in an ecosystem to promote biodiversity, transfer energy and nutrients, maintain ecological balance, and support ecosystem health.

• Living organisms interact in an ecosystem to compete for resources and dominate others.