Germination Germination is the process by which the embryo grows and develops, eventually becomin... more Germination Germination is the process by which the embryo grows and develops, eventually becoming a fully mature plant. The pattern of germination is similar in most dicotyledonous seeds. When the seed is shed, it is usually dry and hard, containing very little water. In this dehydrated state it is best suited to withstand drought and extreme temperatures. When conditions become suitable for germination, the seed takes in water through its micropyle. The tissues absorb water and swell and the testa becomes soft. The radicle grows first, pushing through the testa and entering the soil. Next, either the hypocotyl or the epicotyl, depending on the species, starts to enlongate and carry the plumule upwards through the soil. Elongation of the epicotyl brings the embryo out from between the cotyledons and through the soil, leaving the cotyledons below ground. Elongation of the hypocotyl brings the cotyledons and the plumule above ground. Whichever pattern of germination occurs, the energy and raw materials required for growth come from the food (usually starch) stored in the cotyledon. Conditions Necessary for Germination and their purpose The conditions necessary for germination are:
Germination Germination is the process by which the embryo grows and develops, eventually becomin... more Germination Germination is the process by which the embryo grows and develops, eventually becoming a fully mature plant. The pattern of germination is similar in most dicotyledonous seeds. When the seed is shed, it is usually dry and hard, containing very little water. In this dehydrated state it is best suited to withstand drought and extreme temperatures. When conditions become suitable for germination, the seed takes in water through its micropyle. The tissues absorb water and swell and the testa becomes soft. The radicle grows first, pushing through the testa and entering the soil. Next, either the hypocotyl or the epicotyl, depending on the species, starts to enlongate and carry the plumule upwards through the soil. Elongation of the epicotyl brings the embryo out from between the cotyledons and through the soil, leaving the cotyledons below ground. Elongation of the hypocotyl brings the cotyledons and the plumule above ground. Whichever pattern of germination occurs, the energy and raw materials required for growth come from the food (usually starch) stored in the cotyledon. Conditions Necessary for Germination and their purpose The conditions necessary for germination are:
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