Zoology: The Animal Kingdom
🧬 Classification (Taxonomy)
- Domain: Eukaryota
- Kingdom: Animalia
- Phyla: Chordata (Vertebrates), Arthropoda (Insects/Crustaceans), Mollusca, etc.
🦁 Mammalia
- Monotremes: Egg-laying mammals (Platypus).
- Marsupials: Pouch-rearing (Kangaroo, Opossum).
- Placentals: Internal development (Humans, Lions, Whales).
🦅 Aves (Birds)
- Evolution: Modern descendants of theropod dinosaurs.
- Adaptations: Hollow bones, feathers, and high-metabolic flight systems.
🦈 Chondrichthyes & Osteichthyes (Fish)
- Cartilaginous: Sharks and rays.
- Bony: Salmon, tuna, and most reef fish.
🐍 Reptilia & Amphibia
- Ectotherms: Regulation of body temperature via external sources.
- Amphibians: Dual-life (water-based larvae, terrestrial adults).
🐝 Invertebrates
- Success: Arthropods account for over 80% of all described animal species.
- Roles: Pollination, decomposition, and foundational food web support.