1. A lizard is resting on a rock and not moving. Why does it still need to use energy from the food it has eaten?
- A. To keep its heart beating and lungs breathing.
- B. To change the color of its skin to absorb more heat.
- C. To listen for predators in the area.
- D. To digest the rock it is sitting on.
2. Based on the principle that food provides energy for action, which animal would likely need to consume the most food relative to its body size?
- A. A very active shrew that is constantly moving and has a high metabolism.
- B. A large, slow-moving python that has just eaten and will rest for a week.
- C. A tortoise that spends most of its day sitting still in the sun.
- D. A garden snail that moves very slowly.
3. When a jaguar hunts and runs, it is converting energy from one form to another. This process starts with the energy stored in its food. What form is this stored energy?
- A. Kinetic energy
- B. Chemical energy
- C. Heat energy
- D. Electrical energy
4. In addition to building body parts, what is the primary role food plays for an animal?
- A. It serves as a source of energy for movement and life processes.
- B. It helps the animal find a safe place to sleep.
- C. It provides coloration for camouflage.
- D. It cleans the animal's digestive system.
5. How does an animal's body unlock the energy stored within food molecules?
- A. By resting for long periods of time.
- B. By exposing its body to sunlight.
- C. By breaking the molecules down chemically.
- D. By drinking large quantities of water.
6. Imagine a simple food chain where a fox eats a rabbit, and the rabbit eats clover. Where did the matter that makes up the fox's body originally come from?
- A. The rabbit
- B. The clover
- C. The air
- D. The sun's energy
7. Which statement best describes the fundamental flow of matter in most ecosystems?
- A. Matter flows from carnivores to herbivores.
- B. Matter originates with animals and flows to plants.
- C. Matter flows from plants to animals.
- D. Matter is created by carnivores.
8. What is the primary difference between the diet of a carnivore and the diet of an herbivore?
- A. Carnivores eat during the day, while herbivores eat at night.
- B. Herbivores eat other animals, while carnivores eat plants.
- C. There is no difference; both eat plants and animals.
- D. Carnivores eat other animals, while herbivores eat plants.
9. An animal that gets its matter and energy by eating only plants is known as which of the following?
- A. A producer
- B. A carnivore
- C. An herbivore
- D. A decomposer
10. A snake eats a mouse, and the mouse ate seeds from a wheat plant. What is the original source of the matter that the snake's body is made of?
- A. The sun
- B. The mouse
- C. The wheat plant
- D. The soil