Reproduction of flowering plants:
Fertilization and embryogenesis:
Double fertilization refers to a process in which two sperm cells fertilize the cells in the ovule. This process begins when a pollen grain adheres to the stigma of the pistil (female reproductive structure), germinates, and develops a long pollen tube. While this pollen tube is growing, a haploid germ cell moves down the tube behind the tube’s nucleus. The germ cell divides by mitosis to produce two haploid (n) sperm cells. It makes its way from the stigma, as the pollen tube grows, down the style, and into the ovary. Here the pollen tube reaches the micropyle of the ovule and digests its way in a synergy, releasing its contents (which include sperm cells).
Synergy by which cells are released into the degenerate and a single sperm makes its way to fertilize the egg cell, forming a diploid (2n) zygote. The second sperm cell fuses with both central cell nuclei, forming a triploid (3n) cell. As an embryo is developed from a zygote, the triploid cell develops into the endosperm, which serves as the embryo’s food supply. The ovule will develop into a seed and the ovary will now develop into a fruit. One can easily get the fresh tulips in houston and yellow roses houston from the flower stores in houston.
Fruit and seed:
As the embryo and endosperm develop within the embryo sac, the sac wall enlarges and forms the seed coat together with the nucellus (which is similarly growing) and the integument. The wall of the ovary develops to form the fruit or pericarp, the form of which is closely related to the type of seed dispersal system. Generally, even beyond the ovary, the effect of fertilization is felt, and other parts of the flower participate in the formation of the fruit, for example, the floral receptacle in apples, strawberries, and others.
The character of the seed coat has a definite relation to the fruit. They protect the embryo and aid in proliferation; They can also directly promote germination. In plants with insoluble fruits, in general, the fruits protect the embryo and secure reproduction. In this case, the seed coat is only slightly developed. If the fruit is wilted and the seed is open, then in general, the seed-coat is well developed and should discharge the functions performed by the fruit.