1. What is the primary source of energy in most ecosystems?(1 point)

Question

Responses

producers
producers

decomposers
decomposers

sunlight
sunlight

consumers
consumers
Question 2
2. In an energy pyramid, which trophic level typically contains the greatest amount of energy?(1 point)
Responses

tertiary consumers
tertiary consumers

producers
producers

secondary consumers
secondary consumers

primary consumers
primary consumers
Question 3
3. Which of the following best describes the role of decomposers in an ecosystem's food web?(1 point)
Responses

They produce energy through photosynthesis.
They produce energy through photosynthesis.

They directly compete with producers for resources.
They directly compete with producers for resources.

They consume primary consumers for energy.
They consume primary consumers for energy.

They break down organic matter and return nutrients to the soil.
They break down organic matter and return nutrients to the soil.
Question 4
4. Energy decreases as it moves up trophic levels. If the producer level in a given energy pyramid contained 1,000 kilocalories, what would be the available amount of energy in the primary consumer level?(1 point)
Responses

10 kcal
10 kcal

100 kcal
100 kcal

1,000 kcal
1,000 kcal

10,000 kcal
10,000 kcal
Question 5
5. How does biodiversity contribute to the sustainability and resilience of an ecosystem?(1 point)
Responses

By standardizing food chains
By standardizing food chains

By providing multiple food sources
By providing multiple food sources

By eliminating predators
By eliminating predators

By decreasing competition

Answer 1

Here are the responses for each question based on ecological principles:

Question 1
What is the primary source of energy in most ecosystems?
Response: sunlight

Question 2
In an energy pyramid, which trophic level typically contains the greatest amount of energy?
Response: producers

Question 3
Which of the following best describes the role of decomposers in an ecosystem's food web?
Response: They break down organic matter and return nutrients to the soil.

Question 4
Energy decreases as it moves up trophic levels. If the producer level in a given energy pyramid contained 1,000 kilocalories, what would be the available amount of energy in the primary consumer level?
Response: 100 kcal

Question 5
How does biodiversity contribute to the sustainability and resilience of an ecosystem?
Response: By providing multiple food sources