Consider the energy flow in an ecosystem. The sun provides energy to plants. When a rabbit eats the plants, only a part of the plant's energy is transferred to the rabbit. Why? A. Some of the plant's energy is used for the plant's growth B. The rabbit cannot digest all the plant...
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. The upward arrows between trophic levels B. The side arrows from each trophic level C. The downward arrows between trophic levels D. The arrows within E. ach trophic level 相关知识点: 试题来源: 解析 B。解析:在表示生态系统能量流动的图中,营养级之间向上的箭头表示能量传递,向下的箭头不符合...
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
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。
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 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 aquatic ecosystem, if the phytoplankton (producers) suddenly die out, which of the following will happen first? A. The number of zooplankton (primary consumers) will increase B. The energy flow in the ecosystem will stop C. The secondary consumers will start to produce their own food ...
The following is a simple model of energy flow in an ecosystem: Sun - Algae - Small fish - Big fish. If the amount of energy in the small fish is 100 units, approximately how many units of energy does the sun provide at the beginning? (The transfer efficiency between each level is ...
Which of the following diagrams correctly shows the general energy flow in an ecosystem? A. 极江油工品者极江油工品者Sun - Consumers - Producers极江油工品者极江油工品者 B. 力出权当织解也本事法论力出权当织解也本事法论Producers - Sun - Consumers力出权当织解也本事法论力出权当织解也本事法...