Limits on Ecosystem Video & MISA-Style Questions

What term describes the maximum number of organisms an ecosystem can support without depleting its resources?

• Population density

• Biotic potential

• Carrying capacity

• Ecological footprint

Which of the following is not considered a biotic factor in an ecosystem?

• Plants

• Bacteria

• Sunlight

• Fungi

How does predation contribute to maintaining balance within an ecosystem?

• It increases the availability of food for herbivores.

• It helps keep prey populations in check.

• It reduces competition for abiotic resources.

• It directly increases the number of producers.

What is a potential consequence if the water level in a pond drops significantly due to a drought?

• An increase in the fish population due to more concentrated food.

• A decrease in the bird population that relies on fish for food.

• An increase in the overall biodiversity of the pond.

• The water quality will improve, leading to healthier plants.

MISA-Style Question (Open-Ended, Analysis)

Think about a pond. On cloudy days there is less sunlight.

Data from our pond:

• Day 1 (Sunny): 10 hours of sun → many green plants

• Day 2 (Cloudy): 5 hours of sun → some green plants

• Day 3 (Very Cloudy): 2 hours of sun → very few green plants

Question:

If the cloudy days continue for two more weeks, what might happen to the plants, fish, and insects in the pond? Use the data to explain your ideas. Tell the cause and effect (what changes first, what happens next).

Sentence Starters (English | Español)

When there is less sun, plants… | Cuando hay menos sol, las plantas…