湖北鄂州张亚军钓友来信讲,他在买来用于钓鱼的蚯蚓中发现一条是一个头、两条尾巴(蚯蚓中间分叉),问是怎么回事。 现答复如下: 蚯蚓是低等的环节动物,通常体节有60-320节。它的身体在受到损伤或被切断后,失去的部分能够在原处从再生芽基重新再长出来,代替丢失的部分,这种能力叫做再生,是生物体的基本属性之一。较低等的动物再生能力比较强,高等动物的正体和器官再生能力明显降低,但仍然保持了组织的再生能力,如创伤愈合。 Zhang Yajun, Hubei Ezhou Zhangyan fishing letter, he was bought for fishing in earthworms found in a head, two tails (earthworms in the middle forks), asked what is going on. The answers are as follows: Earthworms are low-level animals, usually with 60-320 knots. After its body is damaged or severed, the lost part can be regenerated from the regenerative bud base in place instead of the missing part. This ability is called regeneration and is one of the basic attributes of the organism. The lower animals have a stronger ability to regenerate, and the higher animals have significantly lower body and organ regeneration capacity, but they still maintain the regenerative capacity of the tissues such as wound healing.