Habitats & Ecosystems — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. In the food chain grass to rabbit to fox, which one eats the grass?
A) The fox
B) The rabbit
C) The sun
D) The soil
The rabbit is the plant eater in this chain. The fox then eats the rabbit.
2. In the food chain leaf to caterpillar to bird, what does the bird eat?
A) The leaf
B) The tree
C) The caterpillar
D) Another bird
Arrows point from food to eater. The caterpillar is the food that the bird eats.
3. Where does a food chain almost always begin?
A) With a big animal
B) With a plant or the sun
C) With water
D) With a rock
Plants use the sun to make food, so nearly every food chain starts with a plant and sunlight.
4. Which of these is a food chain that makes sense?
A) Fox eats grass eats rabbit
B) Grass eats rabbit eats fox
C) Grass then rabbit then fox
D) Fox then rabbit then grass
A food chain goes plant, then plant eater, then meat eater: grass, rabbit, fox.
Part B: Fill in the Blank
Write the correct answer on each line.
1. A living thing that makes its own food using sunlight is a plant.
Plants use sunlight, water, and air to make their own food, starting most food chains.
2. An animal that eats only plants is called a plant eater.
Plant eaters, also called herbivores, get their energy by eating plants.
3. A fox that eats a rabbit is a meat eater.
Meat eaters, also called carnivores, get their energy by eating other animals.
4. Arrows in a food chain point from the food to the eater.
The arrow shows energy moving from the food into the animal that eats it.
5. Nearly all food chains get their first energy from the sun.
The sun gives plants the energy to grow, and that energy moves up the food chain.