Printable answer key
Biology Cells and Ecosystems
Use this answer key after players complete the quiz or when reviewing a printed worksheet.
1. What is often called the basic unit of life?
Correct answer: A. Cell
Explanation: Cells are often called the basic units of life because living things are made of cells.
2. Which cell part contains most of a cell's genetic instructions?
Correct answer: A. Nucleus
Explanation: In many cells, the nucleus contains most genetic instructions.
3. What do plants use photosynthesis to make?
Correct answer: A. Sugar for energy
Explanation: Photosynthesis lets plants use light energy to make sugars they can use.
4. What is a producer in an ecosystem?
Correct answer: A. An organism that makes its own food
Explanation: Producers, such as plants, make their own food, often using sunlight.
5. Which organism is a decomposer?
Correct answer: A. Fungus
Explanation: Many fungi break down dead material and return nutrients to ecosystems.
6. Biology Cells and Ecosystems — item 6: What is a habitat?
Correct answer: A. The place an organism lives
Explanation: A habitat is the place where an organism lives and gets what it needs.
7. What is an adaptation?
Correct answer: A. A trait that helps survival
Explanation: An adaptation is a trait or behavior that helps an organism survive or reproduce.
8. What does biodiversity mean?
Correct answer: A. Variety of living things
Explanation: Biodiversity means the variety of living things in an area or on Earth.
9. Which statement describes a food web?
Correct answer: A. Many connected food chains
Explanation: A food web shows many feeding relationships connected together.
10. Why are pollinators important to many plants?
Correct answer: A. They help plants reproduce
Explanation: Pollinators move pollen between flowers, helping many plants make seeds.