This engaging, NGSS-aligned science passage for grades 4-5 explores how plant roots absorb water and nutrients from the soil. Students will learn about the structure and function of roots, the role of root hairs, the process of absorption, and how water travels through the xylem to reach all parts of a plant. Key scientific vocabulary is highlighted and defined, supporting strong science literacy. Real-world examples, such as trees and crops, help students connect concepts to everyday life. The passage includes a fun 'Interesting Fact,' a glossary, multiple-choice quiz, and writing activity to reinforce understanding. Spanish translation is provided to support bilingual learners. Activities are suitable for classroom or independent study, and audio integration ensures accessibility for all students. This resource supports learning standards and builds foundational science knowledge in a fun, accessible way.
Written by Workybooks TeamPublished by Workybooks
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"Bamboo" by WikiImages / Pixabay.
Roots are plant parts that grow underground. They have two main jobs that help plants survive. First, roots take in water and minerals from the soil. Second, they hold the plant firmly in place so it does not tip over when wind blows or rain falls.
Roots can absorb water because they have special features. Tiny root hairs grow out from the main roots like little threads. These root hairs work like straws that suck up water from the soil. Root hairs are so small you need a microscope to see them clearly. Because there are thousands of root hairs on each plant, they create a large surface area—the total amount of root touching the soil. More surface area means more water can enter the plant at the same time.
Different plants have different root systems. A taproot is one thick main root that grows straight down deep into the ground. Carrots and dandelions have taproots. Fibrous roots are many thin roots that spread out in different directions near the soil surface. Grass and corn have fibrous roots. Both types of roots anchor the plant and absorb water, but they do it in different ways depending on where water is located in the soil.
Interesting Fact: A single rye plant can grow over 14 billion root hairs in its lifetime! If you lined them all up end to end, they would stretch for thousands of miles.
What are the two main jobs of roots?
Make food and absorb sunlightAbsorb water and hold plant in placeProduce flowers and make seedsStore food and make leaves
What do root hairs do?
Make the plant grow tallerProtect the plant from insectsAbsorb water from the soilHelp the plant make flowers
Which plant has a taproot system?
GrassCornCarrotRice
Why does more surface area help plants?
It makes the plant grow fasterIt allows more water to enterIt makes stronger stemsIt produces more leaves
How do fibrous roots grow differently from taproots?
They grow above the groundThey grow straight down deepThey spread out near the surfaceThey do not absorb water
What helps roots absorb more water at once?
Having thousands of tiny root hairsGrowing only one thick rootStaying close to the surfaceGrowing very slowly
Root hairs are large enough to see clearly.
TrueFalse
What does the word 'anchor' mean in passage?
To hold firmly in placeTo grow very quicklyTo absorb nutrientsTo spread out widely