1, Section 1: Green leaves are dancing lightly on the branches, and life is singing in the sun. In the breath of spring, everything revives and takes on a new look.
2. Section 2: Summer sunshine is like fire and flowers are like the sea. The fragrance is beautiful, and the beauty of nature is beyond words.
3. The third quarter: The autumn wind is bleak, the maple leaves are red, and the fruits are covered with branches. In the harvest season, thank nature for its gifts.
4. Section 4: Winter snow covers the earth, and pines and cypresses are green in the cold wind. The tenacity of life is frightening.
Plants are one of the main forms of life, including trees, shrubs, vines, grasses, ferns, green algae, lichens and other familiar creatures. Plants can be divided into seed plants, bryophytes and ferns. It is estimated that there are about 350,000 existing species.
Most of the energy of green plants is obtained from sunlight through photosynthesis, and temperature, humidity, light and fresh water are the basic needs of plant survival. Angiosperms have six organs: roots, stems, leaves, flowers, fruits and seeds. Green plants have the ability of photosynthesis-with the help of light energy and chlorophyll.
Constitutive organ
Plants have six organs: roots, stems, leaves, flowers, fruits and seeds. The stem is the axis of a plant. Erect or crawling in water, with branches on the stem and meristems at the top of the branches for the top to grow. Stems usually differentiate into short nodes and long nodes. Stem has the function of transporting nutrients and water and supporting the distribution and formation of leaves, flowers and fruits in a certain space.
Some stems also have the functions of photosynthesis, nutrition storage and reproduction. Leaves are one of the vegetative organs of vascular plants. Its function is to synthesize organic matter through photosynthesis, and it has transpiration to provide roots with the power to absorb water and mineral nutrients from the outside. Flowers are unusually short branches with reproductive function. Fruit is mainly used as a medium for spreading seeds.