Traditional Culture Encyclopedia - The 24 Solar Terms - The difference between arthropods and annelids
The difference between arthropods and annelids
The main characteristics of arthropod phylum:
(1) Developed and thick exoskeleton
(b) Effective respiratory organ-trachea
(c) Developed nervous system-Ladder and Annexure.
(4) Heterorhythmic segments and somatic segments (annelids are homorhythmic segments)
(5) Segmented appendages (annelids are not divided into segments)
(6) Sensitive sensory organs
(7) There are chitin and protein's bones in vitro.
For example: shrimp centipede Ma Lu insect spider
annulata
See above.
For example: Nereis and Earthworms.
If it is a high school competition, you can add 44673537. I suggest watching more Olympic classics.
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