Hi, young learners! Welcome back to Primary 4 Basic Science and Technology. In our previous lesson, we learned about Changes in Nature. Today, we’re going to learn about Changes in Plants.
Objectives
By the end of this lesson, you should be able to:
- Identify and explain physical changes in plants, including leaf fall, color changes in leaves, flowers, and fruits.
Changes in Plants
Plants go through different changes during their life cycle. These changes are essential for their growth and survival.
Some of these changes are:
– Leaf fall
- When the tree doesn’t need the leaves to make food anymore, it lets them go.
- This is a natural process to conserve energy during the winter months.
– Color of leaves
- Leaves are usually green because of a pigment called chlorophyll.
- In the fall, as the days get shorter and there is less sunlight, the chlorophyll breaks down. That’s why leaves change color.
– Flowers and fruits
- Flowers are an important part of a plant’s life cycle. They contain the reproductive parts of the plant.
- When a plant is ready to reproduce, it produces flowers with bright colors and sweet scents to attract pollinators like bees and butterflies.
Evaluation
Now that you’ve learned about changes in plants, let’s see if you can answer these questions:
- Why do leaves fall from trees?
- Can you name a season when leaves often change color? Why?
- What is the purpose of flowers and fruits in plants?
- How do plants change color in the fall?
- What are some of the benefits of leaf fall for trees?
Conclusion
We’ve learned that plants go through many changes throughout their life cycle, including leaf fall, color changes in leaves, and the development of flowers and fruits. These changes are essential for their growth, survival, and reproduction. Don’t forget to check the comments section if you have any questions, and use the navigation to move to the next lesson. See you in the next lesson!
