Question

Я опять с биологией((( Помогите!!! Как внешни можно узнать круглых и кольчатых червей? Не надо про внутренние строение, а вшнешнее надо. Как их определить? Срочно) Плиззз

Answer 1

У кольчатых сегментированно тело,имеется поясок.
Круглые черви—это животные с тонким,длинным,заостренным на концах нитевидным телом,круглым в поперечном сечении.

Answer 2

Identifying Roundworms and Earthworms Externally

To identify roundworms and earthworms externally, you can look for certain distinguishing features. Here are some key characteristics to consider:

1. Roundworms (Nematodes): - Roundworms are typically cylindrical and elongated in shape. - They have a smooth, non-segmented body. - Their body is covered by a tough, flexible cuticle. - Some roundworms may have a pointed head or a rounded tail. - They vary in size, ranging from a few millimeters to several centimeters in length.

2. Earthworms (Oligochaetes): - Earthworms have a long, segmented body. - Their body is divided into distinct segments called "segments" or "annuli." - Each segment is marked by a visible ring called a "clitellum," which is usually lighter in color than the rest of the body. - Earthworms have a distinct head and tail end. - They have a moist, slimy skin that helps them move through soil.

Please note that these are general characteristics, and there may be variations among different species of roundworms and earthworms. It is always best to consult a field guide or an expert for accurate identification.