Cotyledons are seed leaves in germinating angiosperm seeds
– plants are often classified according to the nature of seed leaves
– usually two in dicotyledonous plants
– one in monocotyledonous plants
– generally a digestive organ in monocots
– raised above  soil level during germination of dicots (epigeal)
– Remains below the soil surface during germination of monocots (hypogeal)