"Leaves of Plants" Plant PPT Courseware 3

Description

"Leaves of Plants" Plant PPT Courseware 3

Help Baby Ye find friends

mission accomplished:

(1) How many leaf babies are there in your group?

(2) How many types of leaves are there? Why is it so divided?

(3) You think ( ) and ( ) are the same species because ( ).

Leaf vein shape

In leaves, the parts that transport water and nutrients are called veins. Some leaf veins are distributed in parallel, such as commelina, rice, bamboo, etc. The leaf veins of some plants are distributed in a network, such as cinnamon, sunflower, impatiens, etc. Leaf veins distributed in parallel are called parallel veins.

Leaf veins distributed in a network are called reticular veins.

extracurricular extension

1. Check the information: Why do the leaves of these plants stay green all year round?

2. Prepare materials for the next class: a ruler, 4 leaves of different sizes, and a record book.

scientific concept

1. The leaves of trees are diverse, and the leaves of the same tree have common basic functional characteristics.

2. The leaves of plants are generally composed of blades and petioles, with veins on the leaves.

3. Leaves are also alive. They grow from leaf buds and eventually age and die, completing their lives.

Leaf buds → small leaves → young leaves → mature leaves → old leaves → withered leaves → fallen leaves

Keywords: Plant teaching courseware, Plant leaves teaching courseware, Educational Science Edition third grade science PPT courseware download, third grade science slide courseware download, Plant PPT courseware download, Plant leaves PPT courseware download, .PPT format;

For more information about the "Leaves of Plants" PPT courseware, please click on the "Leaves of Plants ppt" tag.

"Plant Leaves and Transpiration" PPT courseware:

"Plant Leaves and Transpiration" PPT courseware Part One: Leaf Structure Although the shapes of leaves are diverse, their basic structures are similar. A leaf is composed of petiole and blade, and blade is composed of epidermis, mesophyll and veins. ..

"Plant Leaves and Transpiration" PPT:

"Plant Leaves and Transpiration" PPT Part One Content: Leaf Structure Leaf Structure Leaf Petiole: It is the channel through which the stem transports water and inorganic salts to the leaf. Leaf structure Upper and lower epidermis Epidermal cells: colorless and transparent, irregularly shaped Cells: in half-moon shape..

"Leaves of Plants" PPT download:

Plant Leaves PPT Download Part One: Exploration Activities Warm Tips: Find a plant with leaves and water it enough. Cover the plant's branches and leaves with a clear plastic bag and tie the bag tightly. Place the plant in a sunny location and pay attention to the phenomenon. in conclusion..

File Info

Update Time: 2024-09-30

This template belongs to science courseware Third Grade Science Volume 1, Textbook Edition industry PPT template

Preview