Seeds are a source of life. All living things - plants and animals included - are made of living seeds. So are all the different types of seeds found in nature. Some of these seeds are very common, like the oak tree's oak bough; other seeds are rare or have only been found in very few places, like that of the black-eyed Susan palm. In this article, we'll learn about some of nature's oldest seeds and why they are still available today.
A seed is simply an embryo enclosed in an outer protective cover. The development of that seed is only part of the entire process of creation in seed plants, including both the somatic and anemone plants. In all the creation of a new plant and its eventual survival after it blooms, part of it is reliant on the quality of its early development. It must be able to survive harsh weather conditions and survive the stresses of planting and growing.
Seeds are enclosed within an exoskeleton called the prothallium, which serves as the protective covering during their early development. This is because they are extremely small and contain no blood vessels, nerve endings, or other vital organs. Because of this, they are incapable of photosynthesis, which is the process by which plants convert light into food for themselves. They cannot also tolerate extreme temperatures, so most seeds are often exposed to extreme conditions, such as being exposed to the sun or being frozen in temperatures as low as minus 4 degrees Fahrenheit.
Many kinds of seeds do not have an exoskeleton, meaning that seeds will develop independently from the plant they are developed in. For example, most seeds developed in grass and other plants have an outer coat of something like algae that protects the germ (the seed) from the elements. This coating is called endosperm. However, in some species, there is no endosperm to protect the germ, which is called a cotyledon.
Cotyledons are very tiny plant structures that are actually stem-like structures that grow sideways out of the ground in the same manner that stem cells grow. The growth pattern of a cotyledon can be very irregular, with some varieties sprouting in one direction while others sprout in another direction. When the seed leaves grow in the wrong direction, they can actually block sunlight from reaching other plants, which means that new plants cannot grow in that area.
Seeds are typically hosted in the developing embryo for about one to five hours before they become a fully developed zygote. During this time, the germ cell will divide repeatedly, producing numerous seeds that will eventually become the embryo. The number of divisions, the germ cell undergoes determines the eventual shapes and sizes of the seeds.
The different forms of a cotyledon include an endosperm (the largest part of an embryo), a sperm (which carries the genetic information needed by an offspring), and nuclei (which produce the actual DNA). The endosperm travels through the vagina to fertilize the ovum, while the sperm transports the genetic material found in the nuclei to the fallopian tube. The egg then travels back up the fallopian tube to be fertilized by the sperm. The nucleus, which contains the instructions for making a complete baby, is located in the uterus.
The actual process of making a baby all starts with the fertilization of an ovule by a sperm. In many cases, fertilization takes place within two days or less. Within two days, the fertilized egg implants itself into the fallopian tube where it eventually Embarks in the process of implantation. A week later, the embryo attaches to the exterior of the uterus where it continues to divides and forms the first embryo. Finally, the remaining unfertilized egg develops into a zygote.