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Plant Growth & Development -

#plant_growth_and_development #seed_germination active growth of embryo after seed dormancy Seed germination - Water, Temperature, Oxygen First structure - Radical - out by breaking seed coat - develops into primary root ( tap root ) 1st Event - #imbibition of water by seed after primary root - plumule comes out - shoot system Seed Germination - Cell division - cell extension - Physiological activities suitable temperature - 25 - 35 degree celcius #epigeal / #epigeal_seed_germination Radical First and Faster than plumule Cotyledons out of the ground Examples - Cucurbits, Castor, Onion, Tamarind, Mustard, Bean #hypogeal / #hypogeal_seed_germination plumule grows first and Faster than radical cotyledons inside the ground Examples - Maize, Mango, Gram, Rice, Groundnut #vivipary seed germinates on parent plants, nourished by parent plants Examples - Mangrove plants - Rhizophora, Sonneratia, Ceriops, Avicenia Salt rich soil, Oxygen deficiency small seedling - fall in soil #11thbotany #neet #neetbotany #botany #11thclass