文档介绍：普通动物学笔记(三)(Notes of general zoology (3))
Ordinary zoology notes (3). Txt35 warmth is a color of nature, and the craftsm普通动物学笔记(三)(Notes of general zoology (3))
Ordinary zoology notes (3). Txt35 warmth is a color of nature, and the craftsman who has an eye for beauty can make it perfect. Warmth is a pulsating note on the music score, and the sensitive singer can express it to pure ordinary zoology notes (3).
Chapter eight arthropod doors
The main features of the door
body division
For example: insect class (grasshopper) : head, chest, abdomen 3 parts
Crustacean (shrimp) : head chest, abdomen 2 part
Arachnids (spider) : head, chest, abdomen
Multifoot (centipede) : head, trunk cadre
The division of the body also has a division of labor in physiology:
Head: feeling and feeding center
Chest: movement and support center
Abdomen: nutrition and breeding center 1. 2 appendage The appendages of the arthropods are also arranged in the arthropods, with significant progress compared to the warts of the animal.
The comparison of warts and arthropodia
Warts foot arthropod
According to the distribution of sections, the number of multi-body parts is small
Form is divided into various forms
The articulation of the articulatory segments of the body without any articulation of articulatory limbs
No muscle attachment has a large amount of muscle attachment
1. 3 has developed