"Seed Germination" PPT courseware 4

Description

"Seed Germination" PPT courseware 4

learning target

1. Know the basic composition of seeds

2. Explore by yourself the conditions for seed germination

Seed characteristics

Although seeds are small, they have a wonderful "body"

Let's go inside the body and observe

developing part of seed

Seeds contain radicle and embryo

The radicle will grow into the root of the plant

The germ will grow into the stems and leaves of the plant

Exploration experiment

External conditions required for seed germination

Ask the question: What are the external conditions that affect seed germination?

Make a hypothesis: Seed germination requires water, air, and the right temperature.

Recommended equipment: petri dishes, absorbent paper, labels, water, soybean seeds.

Design experiment: Each group selects one or more conditions for experimental design and designs a control experiment.

Expansion one

1. What is the dormancy period of seeds? Can seeds germinate when they are in the dormant stage? What conditions can be inferred for seed germination?

2. You can find relevant information on the Internet about the life span of seeds.

Think about it:

1. Which part of the seed structure develops first?

2. Which part of the new plant does the radicle, hypocotyl, and embryo develop into?

3. What changes happened to the cotyledons?

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Update Time: 2024-11-25

This template belongs to science courseware Fourth-grade science volume 2 of the E-education edition industry PPT template

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