| Category | Format | Size |
|---|---|---|
| People's Education Press third grade science volume 2 | pptx | 6 MB |
"Plant Seeds" Plant Growth PPT Courseware 2
Description
"Plant Seeds" Plant Growth PPT Courseware 2
Bean seed structure diagram
Radicle: develops into root
Seed coat: protects the embryo
Germ: develops into stems and leaves
Cotyledons: store nutrients
The picture below is a diagram of the structure of corn, with the names and functions of each part.
1. Peel and seed coat: protection
2. Endosperm: stores nutrients
3. Cotyledon (one piece)
4. Germ: will develop into stems and leaves
5. Hypocotyl
6. Radicle: develops into root
1. Turning blue when exposed to iodine is a characteristic of starch. What does it mean that the endosperm of corn turns blue when exposed to iodine?
Answer: It means that the endosperm of corn contains starch.
2. Will the _____ in the seed develop into a plant in the future?
3. The seeds of corn and beans have ______ on the outside and the seeds are wrapped in the peel. Such plants are called _________; while the seeds of pine trees are exposed and there is no _____ on the outside. Such plants are called ____________.
Autonomous detection
1. Compared with mosses and ferns, the most important reason why seed plants are more suitable for terrestrial environments is that _________
2. The seeds of _____, ______, _______ and other plants are naked. The seeds of ____, ____, ______ and other plants are covered with pericarp. The significance of being covered with pericarp is ____________ for the seeds and their propagation.
3 The characteristics of fruits suitable for spreading are:
aThe surface of the fruit has wings or hairs, which are suitable for flying in the wind;
b. There are stinging hairs or mucus on the surface, which can adhere to the body surface of animals and spread.
c. The fruits are brightly colored and have sweet slurry or pulp, which can induce animals to listen and eat. The seeds are excreted in feces and spread.
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For more information about the "Growth of Plants and Seeds of Plants" PPT courseware, please click on the "Growth of Plants PPT Seeds of Plants" PPT tag.
"Plant Seeds" Plant Growth PPT Courseware:
"Plant Seeds" Plant Growth PPT Courseware Think about it, what parts does a seed consist of? What are the functions of each part? Seed Seed Coat Stores nutrients Cotyledons Protects the seed Radicle Grows into stems and leaves Germ Grows into roots... Explore what is needed for seed germination...
File Info
Update Time: 2024-07-02
This template belongs to science courseware People's Education Press third grade science volume 2 industry PPT template
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