Science: Plant Needs: Sunlight, Water, and Soil Worksheet

Question 1

Name three things most plants need to grow well.

Accepted Answer

Most plants need sunlight, water, and soil to grow well. They also need air and space.

Question 2

A plant is placed in a dark closet for one week. What might happen to the plant, and why?

Accepted Answer

The plant might become weak, pale, or stop growing because it is not getting sunlight. Plants need sunlight to make food.

Question 3

Circle the best place for a plant to grow: on a sunny windowsill, inside a closed box, or under a bed. Explain your choice.

Accepted Answer

A sunny windowsill is the best place because the plant can get sunlight. Sunlight helps the plant make food and stay healthy.

Question 4

Why do plants need water?

Accepted Answer

Plants need water to stay healthy and move nutrients through their stems and leaves. Without enough water, plants can wilt.

Question 5

Mia waters her plant every day until the soil is very soggy. The leaves start turning yellow. What should Mia do?

Accepted Answer

Mia should water the plant less and let the soil dry a little between waterings. Too much water can hurt a plant.

Question 6

Look at a plant with drooping leaves and dry, cracked soil. What does the plant probably need?

Accepted Answer

The plant probably needs water. Dry soil and drooping leaves can be signs that a plant is thirsty.

Question 7

What job does soil do for many plants?

Accepted Answer

Soil helps hold the plant in place and gives the plant nutrients. Soil also holds some water for the roots.

Question 8

A seed is planted in plain sand, and another seed is planted in rich garden soil. Which seed will probably grow better? Explain why.

Accepted Answer

The seed in rich garden soil will probably grow better because soil has nutrients and can hold water. Plain sand has fewer nutrients.

Question 9

Draw or describe what healthy plant roots do in the soil.

Accepted Answer

Healthy roots grow through the soil and take in water and nutrients. Roots also help hold the plant upright.

Question 10

True or false: A plant can make its own food using sunlight. Explain your answer.

Accepted Answer

True. A plant uses sunlight to help make its own food in its leaves.

Question 11

Sam puts one plant near a window and one plant far from the window. Both plants get the same amount of water. Which plant will likely grow stronger?

Accepted Answer

The plant near the window will likely grow stronger because it gets more sunlight. Sunlight is important for plant growth.

Question 12

A plant has sunlight and soil, but no water for many days. What will likely happen?

Accepted Answer

The plant will likely wilt and may die because it does not have enough water. Plants need water to stay alive.

Question 13

Put these plant care steps in a good order: add soil to a pot, plant the seed, water the seed, place the pot in sunlight.

Accepted Answer

A good order is to add soil to a pot, plant the seed, water the seed, and place the pot in sunlight.

Question 14

A class grows bean plants. Plant A gets sunlight and water. Plant B gets water but no sunlight. What is the main thing being tested?

Accepted Answer

The class is testing how sunlight affects plant growth. The plants both get water, but only one gets sunlight.

Question 15

Write one sentence that tells how to take care of a classroom plant.

Accepted Answer

A good answer is: I can take care of a classroom plant by giving it enough water, keeping it in sunlight, and making sure it has healthy soil.

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