UNIT 2. THE LIFE CYCLE OF A PLANT
Many plants grow out of seeds and bulbs. Seeds grow roots and shoots. Roots and shoots then grow leaves above ground. Many plants make flowers, which turn into fruits. Flowers and fruits make their own seeds. We call this a life cycle. Germination When a seed falls on the ground, it needs warmth and water in order to germinate; some seeds also need light. Dicots have seed coats that soften with moisture. After being planted in the soil for a few days, the seed absorbs water and swells until the seed coat splits. Monocots have harder seed coats that do not split, but stay in one piece. The stem, called the hypocotyl, pushes through the soil along with the cotyledons, or seed leaves; this is called germination, or sprouting. The tiny root pushes down and grows, looking for water and nutrients. Soon the cotyledons fall off and the first true leaves emerge. It is important that the seed is planted in the right place at the right time in order for it to germ...

Jose Carlos Hernandez Perez
ResponderEliminarTo plant quercus ilex from acorn:
1.- collect acorns at the beginning of autumn
2.- carry out a flotation test, to know if the seed is well
3.- hibernate the remaining acorns
4.- monitor the growth of acorns, to see if the plant goes wrong or can produce a malformation
5.- Plant each acorn in a pot or container for its best development
6.- water the quercus ilex plant