Plant Reproduction Essay

751 words - 3 pages

Plants have two different ways to reproduce. The first one is vegetative reproduction. With this type all the plants that have the same parent have the same genetic make-up. This also lets plants pass adaptations on that they have abtained over the years. Plants with good genetic make-up usually spread quickly and take over an area. An example of this would be the dandelion. These plants can sprout from any part of the plant. An example of this is the potato, farmers will pick the potatoes and cut them into small pieces and then plant them again so they may grow again. Scientists have also placed a branch from one tree and place it on another one; it is now possible to buy an apple tree with six different branches and six different types of apples. The more common way to reproduce is sexual reproduction. In order for this to happen gametes must be produced and fertilized. Seeds, fruits, and embryos must also be developed. The two main advantages of reproducing this way are new genetic combinations and seeds spread over a large area. The following are the reproductive parts in this process. The first part is the flower, which has four types of modified leaves. The first one is the sepal, which protects the other parts of the plant. The second is the petal, which is located inside the sepal. These are normally bright in color to attract animal pollinators. The third is the stamen, which is the male or pollen producing substance. The stamen contains anthers, which is were pollen develops. The last part is the pistils and they are located in the center of the flower. This is the part that contains the female sex parts like the stigma, which traps the pollen. Many plants have both the male and female reproductive parts on the same plant like corn, others like spinach don’t. Plants also have spores because of meiosis; these spores then grow into haploid gameophytes which produce gametes for fertilization. Plants produce to spores, one is the microspore, which is the male part, and the other is the megaspore, which is the female part. A pollen grain is young male gameophyte...

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