Biodiversity and Ecosystem Dynamics

The video discusses biodiversity and its importance in maintaining balanced ecosystems. It explores the impact of biodiversity loss on ecosystems, population dynamics, and the role of limiting factors. The video also covers causes of species extinction, including human impact and habitat changes, and emphasizes the importance of managing ecosystems to prevent extinction.

What is a balanced ecosystem?

• An ecosystem with only one species

• An ecosystem with no living organisms

• An ecosystem where all components interact harmoniously

• An ecosystem with only non-living components

How does a loss of biodiversity affect an ecosystem?

• It has no effect on the ecosystem

• It enhances the ecosystem's ability to sustain species

• It reduces the ecosystem's ability to perform certain functions

• It increases the number of species in the ecosystem

What happens when a species fails to adapt to environmental changes?

• The species becomes a new species

• The species thrives and multiplies

• The species becomes extinct

• The species remains unaffected

What is a population in an ecosystem?

• A collection of non-living components

• A group of living things of the same species in a certain area

• A group of different species living together

• A single organism living in isolation

What is the carrying capacity of an environment?

• The total number of non-living components in an ecosystem

• The average number of species in an ecosystem

• The minimum number of species required for an ecosystem

• The maximum number of species an environment can support

What are limiting factors in an ecosystem?

• Factors that have no impact on population size

• Factors that only affect non-living components

• Factors that limit the size of a population

• Factors that increase population size

What is a major cause of species extinction?

• Increase in population size

• Failure to adapt to environmental changes

• Stable environmental conditions

• Abundant food supply

Which of the following is an example of a threatened species in the Philippines?

• African Elephant

• Philippine Eagle

• Bald Eagle

• Kangaroo

How do human activities contribute to species extinction?

• By decreasing population growth

• By altering habitats and increasing development

• By reducing the impact on ecosystems

• By creating more habitats

What happens to an ecosystem when a species becomes extinct?

• The ecosystem gains new species

• The ecosystem loses a part of its community

• The ecosystem becomes more diverse

• The ecosystem remains unchanged