生产者通过光合作用等方式将太阳能转化为化学能,然后沿着食物链传递给消费者,消费者被分解者分解后,能量释放到环境中。消费者不能自己制造能量,需要从生产者获取;分解者是分解有机物释放能量,不是能量流动的起始;肉食动物是消费者的一部分,也不是能量流动的开始。
If there were no plants in an ecosystem, the energy flow would be ___. A. increased B. unchanged C. disrupted D. improved 相关知识点: 试题来源: 解析 C。解析:如果一个生态系统中没有植物,能量流动将会被扰乱。植物是生态系统中能量转换的基础,没有植物就无法将太阳能转化为化学能,从而无法正常...
The Silk Road spirit is consistent with the ideal of “all states joining together in harmony and peace” long upheld by the Chinese nation, with the Chinese people’s principles of amity, good neighborliness and “helping others to succeed while seeking our own success”, and with the call ...
The flow of energy in an ecosystem is___. A. 员活使格术须力温样团必水近个眼资国得员活使格术须力温样团必水近个眼资国得one-way员活使格术须力温样团必水近个眼资国得员活使格术须力温样团必水近个眼资国得 B. 点思然派转样特除百济因型车切约点思然派转样特除百济因型车切约two-way...
A. Energy can be recycled within the ecosystem B. Energy is transferred from consumers to producers C. Energy is lost as it moves through the trophic levels D. All E. nergy is stored in the top - level consumers 相关知识点: 试题来源: 解析 C。解析:在生态系统的能量流动中,能量在从一个...
A. It remains the same B. It increases gradually C. It decreases gradually D. It first increases then decreases 相关知识点: 试题来源: 解析 C。解析:在生态系统能量流动中,能量沿着食物链传递时,每传递到下一个营养级,能量都会减少,因为在每个营养级生物的呼吸、排泄等都会消耗能量,所以C正确。A选项能...
A. Plants B. Animals C. Decomposers D. All of the above 相关知识点: 试题来源: 解析 D。解析:植物通过光合作用固定太阳能,是能量的最初来源;动物是消费者,依赖植物获取能量;分解者能将动植物遗体等分解,释放出能量和物质供生态系统循环利用,所以以上三者都是生态系统能量流动中重要的部分。
A. From the bottom - dwelling organisms B. From the sunlight hitting the water C. From the large fish D. From the water itself 相关知识点: 试题来源: 解析 B。解析:在水生生态系统中,能量流主要从阳光照射到水面开始,因为水生植物(如藻类等)通过光合作用将光能转化为化学能。A选项,底栖生物不是能...
试题来源: 解析 B。解析:本题考查生态系统中的能量流动顺序。在生态系统中,能量首先由生产者通过光合作用等方式固定,然后传递给消费者,消费者死后遗体等被分解者分解,能量流向分解者,所以正确的顺序是Producers → Consumers → Decomposers,选项A、C、D顺序错误。
A. By directly providing heat energy to other organisms B. Through photosynthesis, converting solar energy into chemical energy and passing it on in the food chain C. By consuming the energy of other organisms D. By blocking the E. nergy transfer between different trophic levels ...