Solution to the "Basic Needs of Plants" Worksheet
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Part 1: Matching Plant Needs to Plant Parts
We are asked to draw a line matching each plant need to the part of the plant that helps meet that need.
Here’s the correct matching:
|
Plant Need |
Matching Plant Part |
|--------------------|-------------------------|
|
Water |
Root |
|
Air |
Leaf |
|
Minerals |
Root |
|
Sunlight |
Leaf |
|
Reproduction |
Flowers |
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Explanation of Each Match:
-
Water → Root:
The
roots absorb water from the soil. They have tiny root hairs that increase surface area for better absorption.
-
Air → Leaf:
Plants need carbon dioxide (a component of air) for photosynthesis.
Leaves have small openings called
stomata that allow gas exchange — taking in CO₂ and releasing oxygen.
-
Minerals → Root:
Minerals (like nitrogen, phosphorus, potassium) are dissolved in soil water and absorbed by the
roots along with water.
-
Sunlight → Leaf:
Leaves contain chlorophyll, the green pigment that captures sunlight. This light energy is used in
photosynthesis to make food.
-
Reproduction → Flowers:
Flowers are the reproductive organs of flowering plants. They produce seeds through pollination and fertilization.
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Part 2: Answering the Questions
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How do roots help a plant survive?
>
Answer:
> Roots help a plant survive by absorbing water and minerals from the soil. They also anchor the plant firmly in the ground, preventing it from being blown away by wind or washed away by rain.
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Why do plants need sunlight?
>
Answer:
> Plants need sunlight to make their own food through a process called
photosynthesis. Sunlight provides the energy needed to convert carbon dioxide and water into glucose (food) and oxygen.
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✔ Final Summary
| Plant Need | Plant Part |
|----------------|-----------------|
| Water | Root |
| Air | Leaf |
| Minerals | Root |
| Sunlight | Leaf |
| Reproduction | Flowers |
And the answers:
-
Roots absorb water/minerals and anchor the plant.
-
Sunlight is essential for photosynthesis — the process that makes food for the plant.
This worksheet teaches students how different parts of a plant work together to meet its basic needs.
Parent Tip: Review the logic above to help your child master the concept of 3rd grade science worksheet plants.