Integrate Information From Several Texts Practice Test
•8 QuestionsText 1: "Producers: The Food Chain Starts Here" M. Chen, Nature Notebook, 2022
In an ecosystem, producers are living things that make their own food. Most producers are plants, but algae can be producers too. Producers use sunlight, water, and carbon dioxide to make sugar in a process called photosynthesis. This sugar stores energy. When an animal eats a plant, the animal gets some of that stored energy. Producers also provide oxygen as a helpful byproduct of photosynthesis. Without producers, most ecosystems would not have enough energy for other living things to survive.
Text 2: "Consumers: Eating for Energy" S. Rivera, Wild World Magazine, 2023
Consumers cannot make their own food, so they must eat other organisms. Herbivores, like rabbits, eat plants. Carnivores, like hawks, eat other animals. Omnivores, like bears, eat both plants and animals. When consumers eat, they get energy and nutrients. Some consumers are predators, while others are scavengers that eat animals that are already dead. Consumers depend on producers directly or indirectly, because even carnivores rely on animals that once ate plants.
Text 3: "Decomposers: Nature’s Recyclers" A. Williams, Earth Science Kids, 2024
Decomposers break down dead plants and animals. Fungi, bacteria, and some insects act as decomposers. As they break down remains, they return nutrients to the soil and water. Those nutrients help plants grow, which supports the whole ecosystem. Decomposers also break down waste, like fallen leaves. Without decomposers, dead matter would pile up, and nutrients would stay locked inside it. Ecosystems need decomposers to keep materials moving in a cycle.
How do the roles in Texts 1, 2, and 3 connect to keep energy and nutrients moving in an ecosystem?
Text 1: "Producers: The Food Chain Starts Here" M. Chen, Nature Notebook, 2022
In an ecosystem, producers are living things that make their own food. Most producers are plants, but algae can be producers too. Producers use sunlight, water, and carbon dioxide to make sugar in a process called photosynthesis. This sugar stores energy. When an animal eats a plant, the animal gets some of that stored energy. Producers also provide oxygen as a helpful byproduct of photosynthesis. Without producers, most ecosystems would not have enough energy for other living things to survive.
Text 2: "Consumers: Eating for Energy" S. Rivera, Wild World Magazine, 2023
Consumers cannot make their own food, so they must eat other organisms. Herbivores, like rabbits, eat plants. Carnivores, like hawks, eat other animals. Omnivores, like bears, eat both plants and animals. When consumers eat, they get energy and nutrients. Some consumers are predators, while others are scavengers that eat animals that are already dead. Consumers depend on producers directly or indirectly, because even carnivores rely on animals that once ate plants.
Text 3: "Decomposers: Nature’s Recyclers" A. Williams, Earth Science Kids, 2024
Decomposers break down dead plants and animals. Fungi, bacteria, and some insects act as decomposers. As they break down remains, they return nutrients to the soil and water. Those nutrients help plants grow, which supports the whole ecosystem. Decomposers also break down waste, like fallen leaves. Without decomposers, dead matter would pile up, and nutrients would stay locked inside it. Ecosystems need decomposers to keep materials moving in a cycle.
How do the roles in Texts 1, 2, and 3 connect to keep energy and nutrients moving in an ecosystem?