Course: 8.4 原生动物 | The Way To Learn

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原生动物

Close-up of a protozoan exhibiting cilia for movement in microscopic view.

What's like an animal, but not an animal?
::动物是什么样的,但不是动物?

An animal-like , or a protozoa. These protists have the ability to move, usually with some sort of cilia or flagella , and must obtain their energy from other sources. But obviously, they are much simpler than .
::类似动物或原生动物。这些原生动物有能力移动,通常使用某种仙子或旗子,并且必须从其它来源获得能量。但显然,它们比(......)简单得多。

Animal-Like Protists: Protozoa
::动物类原生动物:原生动物

Animal-like protists are commonly called protozoa (singular, protozoan). Most protozoa consist of a single . They are animal-like because they are heterotrophs , and are capable of moving. Although protozoa are not animals, they are thought to be the ancestors of animals.
::动物类原生动物通常被称为原生动物(原生动物 ) 。多数原生动物都由单一的动物组成。它们与动物相似,因为它们是血化营养物质,能够移动。虽然原生动物不是动物,但被认为是动物的祖先。

Ecology of Protozoa
::原生zoa 的生态

Protozoa generally feed by engulfing and digesting other organisms . As consumers, they have various roles in and webs. Some are predators . They prey upon other single-celled organisms, such as . In fact, protozoa predators keep many bacterial under control. Other protozoa are herbivores . They graze on . Still others are decomposers . They consume dead organic matter. There are also parasitic protozoa that live in or on living hosts. For example, the protozoan that causes malaria lives inside a human host . Protozoa are also important food sources for many larger organisms, including and worms.
::蛋白质一般通过吞没和消化其他生物来喂食。作为消费者,它们有多种作用,有的则是捕食者,有的则是捕食者,它们食用其他单细胞生物,例如:事实上,蛋白质捕食者使许多细菌受到控制。其他原虫是食草动物。它们食用。还有一些是脱腐者。它们消耗死有机物。它们还有寄生者或活主的寄生虫。例如,造成疟疾的蛋白质在人类宿主中生存。蛋白质也是许多较大生物的重要食物来源,包括蠕虫和蠕虫。

Classification of Protozoa
::原生索阿分类

Protozoa can be classified on the basis of how they move. As shown in Table , protozoa move in three different ways. Only sporozoa cannot move. Note that this is based only on differences in movement . It does not represent phylogenetic relationships.
::Protozoa 可以根据它们移动的方式进行分类。如表所示, 原生zoa 以三种不同的方式移动。只有 porozoa 无法移动。请注意, 这只能基于运动的差异。它不代表植物遗传关系。