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STC Plant Growth and Development Lesson 12: Observing Pods Kennewick School District.

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Presentation on theme: "STC Plant Growth and Development Lesson 12: Observing Pods Kennewick School District."— Presentation transcript:

1 STC Plant Growth and Development Lesson 12: Observing Pods Kennewick School District

2 Overview In nature, everything has its time and place. The flower petals attract bees, allowing pollination to take place. Now the flower will wither and die, and the seeds will develop. In this lesson, students will observe this miraculous process. This is a hidden slide for teacher information. STC Plant Growth and Development Lesson 12: Observing Pods

3 Lesson Objectives  Students observe the development of the fertilized pods between Day 17 and Day 35.  Students record their observations by drawing, writing, and graphing. This is a hidden slide for teacher information. STC Plant Growth and Development Lesson 12: Observing Pods

4 Background Soon after pollination and fertilization, the flower will begin to change. The petals fade, wither, and fall. The ovules, or eggs, inside the ovary are developing into seeds. The pods, which are actually enlarged ovaries, grow and swell. The process continues until about Day 36, when the plant is removed from the watering system so that the pods can dry and ripen. During this time, there will be very little upward growth because the plant is expending its energy on seed production. Continued measurements will confirm this for students. Plan on having students observe and record pod growth on about Days 17, 24, and 31. This is a hidden slide for teacher information. STC Plant Growth and Development Lesson 12: Observing Pods

5 Materials list For each student:  Student notebook  Plant with pods developing  1 sheet centimeter graph paper  1 toothpick For every two students:  1 hand lens  1 pair of forceps (optional) STC Plant Growth and Development Lesson 12: Observing Pods

6 Observe your plants with the hand lens. Look closely at the flowers. STC Plant Growth and Development Lesson 12: Observing Pods

7 What changes did you observe?  What is happening to the petals?  What has happened to the anthers?  How does the pistil look now? STC Plant Growth and Development Lesson 12: Observing Pods

8 Draw your plant in your science notebook (right-hand side). Be sure to include the following information:  Today’s date  Age of your plant in days  The height of your plant  Label the parts of your plant  Sentences describing your observations STC Plant Growth and Development Lesson 12: Observing Pods

9 Continue making observations of your plant at least once each week until Day 35. STC Plant Growth and Development Lesson 12: Observing Pods

10 What different stages of development can you see on the same plant at the same time? Life Cycle Card 8Life Cycle Card 9 Add further observations to your science notebook. Figure 12-1 Brassica Pods STC Plant Growth and Development Lesson 12: Observing Pods

11 Clean up and put all supplies where they belong. STC Plant Growth and Development Lesson 12: Observing Pods

12 Update your Table of Contents STC Plant Growth and Development Lesson 12: Observing Pods

13 pod The part of a plant that surrounds the seeds. When the seeds ripen, the pod splits open. Add this vocabulary word and its meaning to your glossary. STC Plant Growth and Development Lesson 12: Observing Pods


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