There are two types of germination : (a) epigeal germination (b)hypogeal germination
a) Epigeal germination: Here during seed germination, the cotyledons are brought above the ground due to the elongation of hypocotyl. This type of germination is seen in many dicotlyledons like sunflower, castor, bean etc.
b) Hypogeal germination: Here during seed germination, the cotyledons remain in the soil due to the elongation of epicotyl. This type of germination is seen in many dicotyledons like gram, pea etc. and monocotyledons like maize, wheat etc.
