Phylum Annelida | Animal Kingdom | Diversity in Living Organisms
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- Опубликовано: 29 окт 2024
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Hey everyone !
In this video you are going to see about the phylum Annelida there characteristics and classification of the classes .
Characteristics:
Habitat: mostly aquatic, some are terrestrial
Habit: free living
Symmetry: bilateral symmetry
Coelom: coelomate (Body cavity is a true coelom, often divided by internal septa)
Body is metamerically segmented
Grade of organization: organ system level of organization
Germ layer: triploblastic
Body possesses 3 separate sections, a prosomium, a trunk and a pygidium.
Digestive system: complete and developed
Respiration: by general body surface
Nervous system: nervous system with an anterior nerve ring, ganglia and a ventral nerve chord.
Circulatory system: Has a true closed circulatory system.
Excretion: by nephridia
Reproduction: Sexual and gonochoristic or hermaphoditic.
Fertilization: Internal or external
Development: direct with no larval stages
In this next video we are going to see about Phylum Mollusca .
Hope you understand the video , Please do let me known in the comments section below .
▶Do check out the playlist of ch - fundamental unit of life-cell :
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▶Do check out the playlist of chapter - Diversity In living organisms:
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