13. Plants in different environments 不同环境中的植物 1. Plants in different environments在我国南方地区可以看到大榕树“一树成林”，在北方地区却很少看到这种现象。 2. Plants in different environments这是为什么呢? 3. Mission card任务卡 4. Observe the surrounding plants and understand the characteristics of plants in different environments观察周围的植物，了解不同环境中植物的特点 5. Activity process活动过程 6. How does lotus adapt to the water environment?莲是怎样适应水中环境的? 7. How does lotus adapt to the water environment?藕为什么有这么多孔? 8. I found …我发现...... 9. Information Card资料卡 10. The underground stem (lotus root) and petiole of the lotus have holes, which can store air and lotus breathe in water.莲的地下茎(藕)和叶柄都有孔，可以储存空气，有利于莲在水中呼吸。 11. The lotus has long petioles that allow the leaves to stretch out of the water. 莲的叶柄长，可以使叶子伸出水面。 12. There is a layer of waxy white powder on the surface of the leaf, which can make Rain Water gather into water droplets and make the leaves realize self-cleaning function.叶子表面有一层蜡质白粉，能使雨水聚成水珠，使叶子实现自我清洁功能。 13. Large blades help absorb more sunlight大大的叶片有利于吸收更多的阳光。 14. How does cactus adapt to desert environment?仙人掌是怎样适应沙漠环境的? 15. Thinking Navigation思维导航 16. 1.What are the characteristics of 1. desert environment?沙漠环境有什么特点? 17. What are the characteristics of the roots, stems and leaves of cactus? What is the effect of these characteristics on cactus adaptation to desert environment?仙人掌的根、茎、叶有什么特点?这些特点对仙人掌适应沙漠环境有什么作用? 18. How do other plants adapt to the environment? 其他植物是怎样适应环境的? 1. Pine trees松 树 2. Banyan tree榕树 3. Monkey bab猴面包树 4. I know the plants of the northern landscape我知道北方文地带的植物 5. Information Card资料卡 6. The stem of monkey bread tree is thick, wood is loose, porous. In the rainy season, the baobab tree absorbs and stores water by soft wood, and when the early season comes, the leaves of the baobab tree fall off, the evaporation of its own water decreases, and the water stored in the rainy season passes through the long dry season.猴面包树的茎粗大，木质疏松，多孔。雨季时，猴面包树利用松软的木质吸收并贮存水分;早季来临时，猴面包树叶子脱落,自身水分蒸发减少，利用雨季贮存的水分度过漫长的旱季。 7. External plant forms in different environments have different characteristics that are conducive to the survival of line plants. 不同环境中的植物外部形态具有不同的特点，这些特点有利于线植物生存。 8. Expand activities拓展活动 9. What kind of environment should be created if tropical plants are planted in the ecological environment of northern China? Check the data and find out.我国北方地区的生态明里如果的环境 种植热带植物，需要创造怎样的环境？查阅资料，了解一下。 |
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