1. Unit 3 Lesson 1 What Are Some Plant Life Cycles? Copyright © Houghton Mifflin Harcourt Publishing Company

3. Unit 3 Lesson 1 What Are Some Plant Life Cycles? The Cycle of a Plant’s Life Copyright © Houghton Mifflin Harcourt Publishing Company Plants go through many stages in their lives. The stages an organism, or living thing, goes through during its life is its life cycle.

4. Unit 3 Lesson 1 What Are Some Plant Life Cycles? The Cycle of a Plant’s Life Copyright © Houghton Mifflin Harcourt Publishing Company Most plants come from seeds. A seed germinates when it breaks open and a small plant grows out of it.

5. Unit 3 Lesson 1 What Are Some Plant Life Cycles? Tiny roots begin to grow down the soil Copyright © Houghton Mifflin Harcourt Publishing Company

6. Unit 3 Lesson 1 What Are Some Plant Life Cycles? seedling A new plant or seedling is formed. Copyright © Houghton Mifflin Harcourt Publishing Company

7. Unit 3 Lesson 1 What Are Some Plant Life Cycles? Leaves begin to grow and the plant can make its own food. Copyright © Houghton Mifflin Harcourt Publishing Company

8. Unit 3 Lesson 1 What Are Some Plant Life Cycles? The Cycle of a Plant’s Life Copyright © Houghton Mifflin Harcourt Publishing Company The plant grows into an adult, which forms flower in some types of plants.

9. Unit 3 Lesson 1 What Are Some Plant Life Cycles? The Cycle of a Plant’s Life Copyright © Houghton Mifflin Harcourt Publishing Company A flower is the part of some plants that enables them to reproduce, or make more plants similar to themselves.

10. Unit 3 Lesson 1 What Are Some Plant Life Cycles? The Cycle of a Plant’s Life Copyright © Houghton Mifflin Harcourt Publishing Company A flower grows into fruits.

13. Unit 3 Lesson 2 How Do Plants Reproduce? Radish Life Cycle Copyright © Houghton Mifflin Harcourt Publishing Company Describe what happens at each stage in the radish’s life cycle.

14. Unit 3 Lesson 1 What Are Some Plant Life Cycles? The Cycle of a Plant’s Life Copyright © Houghton Mifflin Harcourt Publishing Company Some plants make seeds without flowers. Their seeds form in cones.

16. Unit 3 Lesson 1 What Are Some Plant Life Cycles? More and More Spores Copyright © Houghton Mifflin Harcourt Publishing Company Some plants do not make flowers, cones, or seeds. Instead, they reproduce with spores. Spores are also reproductive structures that grow into new plants.

17. Unit 3 Lesson 1 What Are Some Plant Life Cycles? More and More Spores Copyright © Houghton Mifflin Harcourt Publishing Company Ferns are an example of a plant that forms spores. Spores will form on the underside of the leaves.

19. Unit 3 Lesson 1 What Are Some Plant Life Cycles? More and More Spores Copyright © Houghton Mifflin Harcourt Publishing Company Moss is another type of plant that reproduces using only spores.