Unit 3 Lesson 1 What Are Some Plant Structures?

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Presentation transcript:

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

Unit 3 Lesson 1 What Are Some Plant Structures? Types of Plants Scientists have identified more than 310,000 types of plants on Earth. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Types of Plants Scientists classify plants into two groups: nonvascular plants and vascular plants. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Types of Plants Nonvascular plants are small plants that grow close to the ground and soak up water and minerals like a sponge. Mosses are nonvascular plants. Copyright © Houghton Mifflin Harcourt Publishing Company

Types of Plants Most plants you see every day are vascular plants. Unit 3 Lesson 1 What Are Some Plant Structures? Types of Plants Most plants you see every day are vascular plants. Vascular plants have a system of tubes that carry water and nutrients through the plant. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Types of Plants All plants that produce flowers, such as rosebushes and magnolia trees, are vascular plants. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Types of Plants Flowers are reproductive structures, but not all vascular plants have flowers. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Types of Plants Some vascular plants, such as pine trees, produce reproductive structures called cones. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Using the Tubes Vascular plants have structures called roots. Roots are usually underground and absorb water and minerals from the soil. Roots also help anchor a plant in the soil. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Using the Tubes There are two main types of roots—fibrous roots and taproots. Fibrous roots are thin, branching roots that grow close to the surface. Grasses and most trees have fibrous roots. Copyright © Houghton Mifflin Harcourt Publishing Company

Fibrous root Unit 3 Lesson 1 What Are Some Plant Structures? Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Using the Tubes Taproots are thick, strong roots that grow deep in the soil. Some plants use taproots to store food. Carrots and beets are taproots. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Using the Tubes Stems are structures that have tubes to carry water, sugar, and minerals to different parts of the plant. Stems also support the plant. Most plant stems grow above ground, but some plants have stems that remain underground. Copyright © Houghton Mifflin Harcourt Publishing Company

Using the Tubes There are many types of stems. Unit 3 Lesson 1 What Are Some Plant Structures? Using the Tubes There are many types of stems. Some plants, such as trees, have a single, hard, woody stem called a trunk. Shrubs have many smaller, woody stems. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Using the Tubes Soft, green stems support other plants, such as daisies. Many plants with soft stems sprout, grow, and die all in one season. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Lots of Leaves Leaves are plant parts that use sunlight to produce sugar for the plant’s food. . Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Plants Make Food Plants make food through a process called photosynthesis. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Lots of Leaves Leaves come in many shapes and sizes. They can be round, heart-shaped, or triangular. They can be long, short, wide, or narrow. Copyright © Houghton Mifflin Harcourt Publishing Company

Lots of Leaves . Vascular plant leaves also have veins. Unit 3 Lesson 1 What Are Some Plant Structures? Lots of Leaves Vascular plant leaves also have veins. . Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? Plants Make Food A substance in the leaves called chlorophyll captures energy from the sun during the day. Chlorophyll is what makes the leaves appear green in color. It also helps plants make sugars to store in their stems, roots, and in some plants, their leaves. Copyright © Houghton Mifflin Harcourt Publishing Company

What kind of root is this? Unit 3 Lesson 1 What Are Some Plant Structures? What kind of root is this? Copyright © Houghton Mifflin Harcourt Publishing Company

What kind of root is this? Unit 3 Lesson 1 What Are Some Plant Structures? What kind of root is this? Copyright © Houghton Mifflin Harcourt Publishing Company

What kind of stem is this? Unit 3 Lesson 1 What Are Some Plant Structures? What kind of stem is this? Copyright © Houghton Mifflin Harcourt Publishing Company

What kind of stem is this? Unit 3 Lesson 1 What Are Some Plant Structures? What kind of stem is this? Copyright © Houghton Mifflin Harcourt Publishing Company

How do plants make their own food? Unit 3 Lesson 1 What Are Some Plant Structures? How do plants make their own food? Copyright © Houghton Mifflin Harcourt Publishing Company

Vascular or non vascular plants? Unit 3 Lesson 1 What Are Some Plant Structures? Vascular or non vascular plants? Copyright © Houghton Mifflin Harcourt Publishing Company

Vascular or non vascular plants? Unit 3 Lesson 1 What Are Some Plant Structures? Vascular or non vascular plants? Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Some Plant Structures? What is this structure? Copyright © Houghton Mifflin Harcourt Publishing Company