Podcast
Questions and Answers
Why do the number of organisms decrease at successive trophic levels in a food chain?
Why do the number of organisms decrease at successive trophic levels in a food chain?
- Because organisms at lower trophic levels reproduce faster
- Because organisms at higher trophic levels require less energy
- As energy is lost as heat during metabolic processes (correct)
- Due to an increase in competition for resources
Which organism from Table 2 is likely to be a predator in the woodland community food web?
Which organism from Table 2 is likely to be a predator in the woodland community food web?
- Caterpillar
- Blackbird
- Mongoose (correct)
- Earthworm
What is the importance of predator/prey relationships within ecosystems?
What is the importance of predator/prey relationships within ecosystems?
- To increase the genetic diversity of prey species
- To control the population of predators
- To maintain the balance of species in an ecosystem (correct)
- To ensure the survival of herbivores
If a disease affects the blackbird population causing most members to die, what would be a likely consequence?
If a disease affects the blackbird population causing most members to die, what would be a likely consequence?
Which organism shares a special relationship with a leguminous plant?
Which organism shares a special relationship with a leguminous plant?
Identify one organism likely to be prey in the woodland community food web.
Identify one organism likely to be prey in the woodland community food web.
What is the primary reason for the decrease in organisms at higher trophic levels?
What is the primary reason for the decrease in organisms at higher trophic levels?
Why do organisms at higher trophic levels require more energy?
Why do organisms at higher trophic levels require more energy?
What happens to energy as it moves up successive trophic levels?
What happens to energy as it moves up successive trophic levels?
Which organism benefits from a relationship with leguminous plants?
Which organism benefits from a relationship with leguminous plants?
