In an ecosystem, energy starts from the sun, then it is absorbed by plants through photosynthesis. The plants are eaten by herbivores, and the herbivores are eaten by carnivores. This process shows that energy in the ecosystem _. A. moves in one direction only B. can be recycled C. ...
In an ecosystem, energy flows from ___. A. producers to consumers B. consumers to producers C. decomposers to producers D. producers to decomposers 相关知识点: 试题来源: 解析 A。本题考查生态系统中能量的流动方向。能量从生产者流向消费者,再流向分解者。生产者通过光合作用将太阳能转化为化学能,...
In an ecosystem energy flow, the first trophic level is occupied by producers. As energy moves up the trophic levels, what usually happens to the amount of available energy? A. It remains the same B. It increases gradually C. It decreases gradually D. It first increases then decreases ...
In an ecosystem, energy flows from producers to consumers. Which of the following is a producer? A. rabbit B. fox C. grass D. eagle 相关知识点: 试题来源: 解析 C。本题考查生态系统中的生产者概念。生产者是能通过光合作用制造有机物的生物,草能进行光合作用,是生产者。
In an ecosystem, energy flows from producers to consumers. Which is an example of a producer? A. Lion B. Rabbit C. Grass D. Fox 相关知识点: 试题来源: 解析 C。解析:生产者是指能够自己制造食物的生物,草是生产者,能通过光合作用制造有机物。狮子、兔子和狐狸都是消费者。
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。
In an ecosystem, the energy available to the decomposers mainly comes from: A. Dead organisms and waste materials B. The sun directly C. Living plants D. Living animals 相关知识点: 试题来源: 解析 A。解析:分解者主要分解死亡的生物体和有机废物,从中获取能量,它们不能直接利用太阳光能,也不是...
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。
In an ecosystem, which component is responsible for converting sunlight into energy? A. Consumers B. Producers C. Decomposers D. Herbivores 相关知识点: 试题来源: 解析 B。在生态系统中,生产者能够将阳光转化为能量。消费者(选项 A)通过摄取其他生物获取能量;分解者(选项 C)分解有机物;食草动物(选项...
In an ecosystem, solar energy is first captured by producers. Which of the following is a producer? A. Lion B. Deer C. Grass D. Wolf 相关知识点: 试题来源: 解析 C。在生态系统中,生产者能够通过光合作用捕获太阳能,草(grass)是生产者,而狮子(lion)、狼(wolf)是肉食性消费者,鹿(deer)是...