🌿 Biological Extremes in Plants & Microorganisms

Category	Organism / Plant
Tallest Tree	Sequoia gigantea
Largest Seed	Lodoicea seychellarum (Double coconut)
Smallest Seed	Orchid (≈ 0.1 mm diameter)
Largest Fruit	Lodoicea maldivica
Smallest Flower	Wolffia
Largest Flower	Rafflesia arnoldii (8–10 kg)
Smallest Gymnosperm	Zamia pygmaea
Smallest Angiosperm	Wolffia microscopica
Tallest Angiosperm	Eucalyptus (Australian eucalyptus)
Largest Fern	Alsophila excelsa (Tree fern)
Lightest Wood	Ochroma pyramidale
Largest Grass	Bambusa
Smallest Pteridophyte	Azolla (Water fern)
Largest Marine Algae	Macrocystis pyrifera
Largest Leaf	Victoria regia
Smallest Mycoplasma	Mycoplasma gallisepticum
Largest Herb	Musa paradisiaca
Smallest Bacteria	Dialister pneumosintes
Largest Unicellular Organism	Acetabularia (Marine green algae)
Minimum Chromosome Number	Haplopappus gracilis (2n = 4)