Science: Plant Life Cycles Worksheet

Question 1

Put these stages of a flowering plant's life cycle in order: adult plant, seed, seedling, flower, fruit with seeds.

Accepted Answer

The correct order is seed, seedling, adult plant, flower, and fruit with seeds.

Question 2

What is germination?

Accepted Answer

Germination is the process in which a seed begins to grow into a new plant when it has the right conditions, such as water, air, and warmth.

Question 3

Name two things most seeds need in order to germinate.

Accepted Answer

Most seeds need water and air to germinate. Many seeds also need the right temperature, or warmth.

Question 4

A small plant has just come out of the seed and started growing leaves. What stage is it in?

Accepted Answer

The plant is in the seedling stage because it has just started growing after germination.

Question 5

What job do roots do for a plant?

Accepted Answer

Roots help hold the plant in the soil and take in water and minerals from the ground.

Question 6

Why are flowers important in the life cycle of many plants?

Accepted Answer

Flowers are important because they help plants reproduce. They make it possible for pollination and seed formation to happen.

Question 7

What is pollination?

Accepted Answer

Pollination is the transfer of pollen from one flower part to another so the plant can make seeds.

Question 8

Name two animals that can help pollinate plants.

Accepted Answer

Two animals that can help pollinate plants are bees and butterflies.

Question 9

How does fruit help a plant in its life cycle?

Accepted Answer

Fruit protects the seeds and can help spread them to new places where new plants may grow.

Question 10

A squirrel carries an acorn away from an oak tree and buries it. How can this help the oak tree's life cycle?

Accepted Answer

This can help the oak tree's life cycle by moving the seed to a new place where it may grow into a new oak tree.

Question 11

Compare a seed and a seedling. How are they different?

Accepted Answer

A seed is the beginning stage that contains a young plant inside. A seedling is a young plant that has already started growing roots, stems, and leaves.

Question 12

Why do plants need to make seeds?

Accepted Answer

Plants need to make seeds so they can reproduce and create new plants of the same kind.

Question 13

Some seeds are spread by wind. Describe one way a seed can be shaped to travel in the wind.

Accepted Answer

A seed can have a light body, tiny hairs, or wing-like parts so the wind can carry it more easily.

Question 14

What stage comes after a flower is pollinated and seeds begin to form?

Accepted Answer

After a flower is pollinated and seeds begin to form, the plant often makes a fruit that holds the seeds.

Question 15

Explain how one plant can lead to many new plants over time.

Accepted Answer

One plant can make many flowers and seeds. Those seeds can be spread to different places, and some of them can grow into many new plants over time.

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Science: Plant Life Cycles

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