Phylum Annelida
graph TD;
A[Phylum Annelida] --> B[Characteristics];
B --> C[Segmented Body];
B --> D[Presence of Bristles];
B --> E[Closed Circulatory System];
A --> F[Classes];
F --> G[Polychaeta];
F --> H[Oligochaeta];
F --> I[Hirudinea];
G --> J[Marine Worms];
H --> K[Earthworms];
I --> L[Leeches];
Phylum Arthropoda
graph TB
A[Phylum Arthropoda]
B[Subphylum Chelicerata]
C[Subphylum Myriapoda]
D[Subphylum Hexapoda]
E[Subphylum Crustacea]
A --> B
A --> C
A --> D
A --> E
B --> F{Class Arachnida}
C --> G{Class Diplopoda}
C --> H{Class Chilopoda}
D --> I{Class Insecta}
E --> J{Class Malacostraca}
E --> K{Class Branchiopoda}
Phylum Mollusca
graph TD;
A[Phylum Mollusca] --> B((Class Gastropoda))
A --> C((Class Bivalvia))
A --> D((Class Cephalopoda))
A --> E((Class Polyplacophora))
A --> F((Class Scaphopoda))
A --> G((Class Monoplacophora))
B --> H{{Examples: Snails, Slugs}}
C --> I{{Examples: Clams, Oysters}}
D --> J{{Examples: Squid, Octopus}}
E --> K{{Examples: Chitons}}
F --> L{{Examples: Tusk Shells}}
G --> M{{Examples: Deep-sea Limpets}}
Phylum Echinodermata
graph TD;
A[Phylum Echinodermata] --> B((Class Asteroidea))
A --> C((Class Ophiuroidea))
A --> D((Class Echinoidea))
A --> E((Class Crinoidea))
A --> F((Class Holothuroidea))
B --> G[Starfish]
C --> H[Brittle Stars]
D --> I[Sea Urchins]
E --> J[Sea Lilies]
F --> K[Sea Cucumbers]
Phylum Hemichordata
graph TB
A[Phylum Hemichordata]
A --> B[Subphylum 1]
A --> C[Subphylum 2]
A --> D[Subphylum 3]
B --> E[Class 1]
B --> F[Class 2]
C --> G[Class 3]
C --> H[Class 4]
D --> I[Class 5]
D --> J[Class 6]
E --> K[Species 1]
F --> L[Species 2]
G --> M[Species 3]
H --> N[Species 4]
I --> O[Species 5]
J --> P[Species 6]