食物网(food web)和食物链(food chain)有什么区别? 答案 食物网(food web)又称食物链网或食物循环.在生态系统中生物间错综复杂的网状食物关系.实际上多数动物的食物不是单一的,因此食物链之间又可以相互交错相联,构成复杂网状关系.在生态系统中生物之间实际的取食和被取食关系并不象食物链所表达的那么简单,食虫鸟...
food chain n. 1.A succession of organisms in an ecological community that are linked to each other through the transfer of energy and nutrients, beginning with an autotrophic organism such as a plant and continuing with each organism being consumed by one higher in the chain. ...
Every food chain starts with energy from the Sun. Green plants are autotrophic, meaning they create their own food using a chemical reaction called photosynthesis. During photosynthesis, plants take carbon dioxide from the air and water from the ground through their roots, which react to produce ...
食物网(foodweb)又称食物链网或食物循环。在生态系统中生物间错综复杂的网状食物关系。实际上多数动物的食物不是单一的,因此食物链之间又可以相互交错相联,构成复杂网状关系。在生态系统中生物之间实际的取食和被取食关系并不象食物链所表达的那么简单,食虫鸟不仅捕食瓢虫,还捕食蝶蛾等多种无脊椎动物,而且食虫鸟本身...
Most animals are part of more than one food chain and eat more than one kind of food in order to meet their food and energy requirements. These interconnected food chains form a food web.The following is a possible food web: Note that the arrows are drawn from food source to food cons...
Foodchainandfoodweb Keywords ••••••••••••••Primaryproducer(初级生产者)Primaryconsumer(初级消费者)Secondaryconsumer(次级消费者)Tertiaryconsumer(三级消费者)Quandaryconsumer(四级消费者)Decomposer(分解者)Trophiclevels(营养级)Autotroph(自养的)Heterotroph(异养的)Saprotroph(...
必应词典为您提供Food-chain-and-food-web的释义,网络释义: 食物链及食物网;食物链和食物网;
The different feeding positions in a food chain or web are called trophic levels. The first trophic level consists of producers, the second of primary consumers, the third of secondary consumers, and so on. There usually are no more than four or fiv...
The food chain ends with the animals that have little or no natural enemies. Teaching Your Young Students About the Food Chain Teacher Planet offers lesson plans for teaching about the food chain and the food web. Resources include hands on activity plans, worksheets, clip art, printables and ...
The food chain is a system used to transmit energy from one organism to the next. When those systems are used in ecology, they are known as the food web.