Question 1
Why do energy losses between trophic levels restrict the length of food chains in ecosystems?
- A) Energy losses occur due to photosynthesis.
- B) Energy losses are a result of heat conversion.
- C) Energy losses limit the availability of nutrients.
- D) Energy losses reduce the amount of available biomass.
Question 2
Based on the trophic pyramid shown in the image, which trophic level is likely to have the lowest biomass?
- A) Primary producers (Trophic Level 1)
- B) Primary Consumers (Trophic Level 2)
- C) Secondary Consumers (Trophic Level 3)
- D) Quaternary Consumers (Trophic Level 4)
Question 3
What are the products of anaerobic cell respiration in animal cells and yeast cells, respectively?
| Trophic Level | Energy Input | Energy Output |
|---|---|---|
| Producers | 10,000 | 8,000 |
| Herbivores | 5,000 | 4,000 |
| Carnivores | 2,000 | 1,500 |
What is the energy transfer efficiency from herbivores to carnivores in this ecosystem?
- A) 10%
- B) 20%
- C) 30%
- D) 40%
Question 4
In a desert ecosystem, a significant portion of the energy is lost as heat and water through evaporation. What effect does this have on the length of the food chain in the desert ecosystem?
- A) It increases the length of the food chain.
- B) It has no impact on the length of the food chain.
- C) It decreases the length of the food chain.
- D) It decreases the number of producers.
Question 5
In the image below, you see a variety of organisms connected in a food web. The image depicts producers, herbivores, carnivores, and decomposers. Identify the primary producers in the food web.
- A) Organism A and Organism D
- B) Organism C and Organism E
- C) Organism B and Organism F
- D) Organism A, Organism C, and Organism F