Presentation is loading. Please wait.

Presentation is loading. Please wait.

Chapter 3 Lessons 2 and 3 How do Materials move through plants? How do cells get and use energy? By: Rylee and Zoee.

Similar presentations


Presentation on theme: "Chapter 3 Lessons 2 and 3 How do Materials move through plants? How do cells get and use energy? By: Rylee and Zoee."— Presentation transcript:

1

2 Chapter 3 Lessons 2 and 3 How do Materials move through plants? How do cells get and use energy? By: Rylee and Zoee

3 Lesson 2 Stems and roots are major plants organs. They have special structures and jobs to perform.

4 Stems and Leaves  Leaves are plant organs.  Leaves are attached to stems.  Stems hold fruit and flowers on plants.

5 Xylem and Phloem  Vascular System: a system of tubes that transports materials such as water and minerals.  Xylem: tubes that carry materials from the plants roots to the leaves.  Phloem: tubes that carry sugar away from the leaves  The roots soak up water from the soil and the water has minerals in it.

6 More about Stems and Vascular Plants  Plants get energy they need by breaking down sugar.  The plants makes its food in the leaves.  Much of the sugar is transported from the leaves to the rest of the plant.  A leaf stem attaches a plants leaves to its stem.

7 Roots  Roots anchor the plant in the ground and hold in place as it grows.  Fibrous Root System: many roots grow out in all directions forming smaller and smaller roots.  Taproot Root System: a large root that grows straight down.

8 Functions of Roots  Roots anchor a plant and may store food.  Roots absorb water from the soil.  Minerals and nutrients are dissolved then enter the roots.

9 Lesson 3 The leaves of a plant make sugar. This sugar contains energy the plant can use for life functions.

10 Photosynthesis  Chlorophyll: a green substance that traps energy from the sun and allows plants to make their own food.  Chloroplasts: stores chlorophyll.  Photosynthesis: Plants make sugar and glucose in the process of photosynthesis.  Photosynthesis can only happen when chlorophyll is present.

11 Energy from Food  Cellular Respiration: cells break down sugar to release energy.  During cellular respiration, sugar starts to be broken down through a series of reactions that take place mostly in the mitochondria.

12 Carbon Dioxide-Oxygen Cycle  Both plants and animals give off carbon dioxide during cellular respiration.  Photosynthesis: carbon dioxide + water Light energy sugar + oxygen chlorophyll  Cellular Respiration sugar + oxygen carbon dioxide + water + energy

13 THANK YOU!


Download ppt "Chapter 3 Lessons 2 and 3 How do Materials move through plants? How do cells get and use energy? By: Rylee and Zoee."

Similar presentations


Ads by Google