光合作用
Flashcard
•
Science
•
4th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
光合作用的定义是什么?
Back
光合作用是植物利用阳光、二氧化碳和水合成食物(糖)并释放氧气的过程。
2.
FLASHCARD QUESTION
Front
光合作用的主要原料有哪些?
Back
水和二氧化碳是光合作用的主要原料。
3.
FLASHCARD QUESTION
Front
光合作用的产物是什么?
Back
光合作用的产物是糖和氧气。
4.
FLASHCARD QUESTION
Front
植物进行光合作用时需要哪种气体?
Back
植物进行光合作用时需要二氧化碳。
5.
FLASHCARD QUESTION
Front
光合作用对生态系统的重要性是什么?
Back
光合作用为植物提供能量,并为其他生物提供食物来源,维持生态平衡。
6.
FLASHCARD QUESTION
Front
如果没有光合作用,会发生什么?
Back
如果没有光合作用,空气中的氧气含量会减少,可能导致人类和其他生物缺氧。
7.
FLASHCARD QUESTION
Front
光合作用的光反应和暗反应有什么区别?
Back
光反应需要光照,产生能量和氧气;暗反应不需要光照,利用能量合成糖。
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