Carrying Capacity and Resource Limits

The video discusses how living organisms can potentially grow their populations indefinitely if resources are unlimited. However, in reality, resources become scarce, leading to competition among individuals and species. The concept of carrying capacity is introduced, which is the maximum population size an environment can support. When populations exceed this capacity, individuals may face starvation, illness, or migration. Examples from aquatic habitats illustrate these concepts.

Why can't populations grow indefinitely?

• Because resources are unlimited

• Because resources are limited

• Because organisms choose not to

• Because of environmental laws

What happens when resources become scarce?

• Species stop reproducing

• Resources become more abundant

• Individuals compete for resources

• Individuals cooperate more

Which two species are mentioned as competing in a pond?

• Bass and trout

• Bluegills and bass

• Bluegills and green sunfish

• Green sunfish and trout

What does carrying capacity refer to?

• The maximum number of species in an ecosystem

• The average number of individuals in a population

• The maximum number of individuals an environment can support

• The minimum number of resources available

What happens when a population is below carrying capacity?

• The population cannot grow

• Individuals can continue to grow and reproduce

• Resources become scarce

• The environment becomes unstable

What is a potential consequence of a population exceeding its carrying capacity?

• Unlimited growth

• Increased resource availability

• Population stability

• Starvation and migration

What might individuals do if their habitat exceeds its carrying capacity?

• Stay and thrive

• Increase their food intake

• Move to a new location

• Stop reproducing

What are examples of resource limits in aquatic habitats?

• Space and predators

• Water and air

• Food and cover

• Temperature and light

How do resource limits affect carrying capacity?

• They have no effect

• They determine the carrying capacity

• They increase the carrying capacity

• They decrease the carrying capacity

What is the relationship between biotic and abiotic resources and carrying capacity?

• They are unrelated

• They only affect living organisms

• They determine the carrying capacity

• They only affect non-living organisms