Story of the Seed-The Brussels Sprouts Brief

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A Matter of Selection by William Mahnke

April 23, 2018

All of the plants in the garden have grown a lot in the past few weeks. However, as they continue to grow, they variations in their appearances. The characteristic of the brassica oleracea plants that seems to exhibit the most change is the shape and color of the leaves. As you see in some of the pictures, some of the plants have what you would think of stereotypical leave shapes and colors. They have the classic green with a white stem and the leaves are a round shape. These qualities however change as we look at other plants. As you see in the second picture, the color of the leaf is a darker green then the first picture. Not to mention, it has a purple stem and the shape of the leaves are very jagged with an overall shape of a round triangle. Not only can the shape and color of the leaves change but the size as well. The length of the leaves in the first and second picture are in order about three or four inches and five or six inches. Also, the width of these are small,

#8: A matter of selection by Chase Lyles

April 22, 2018

For our last story of the seed blog post my group and I looked at all of the plants in the garden to see which part of the plants had the most variation. We concluded that the leaves had the most amount of variation. Our Brussel sprout leaves were very small compared to the cabbage leaves. Our leaves were short and round while the cabbage leavers were very large and round . All of the other plants also had very different shaped leaves because of there different size and/or shape. There are many reasons that there is variation between the different Brassica oleracea plants. One of the reasons is due to mutations that helped some of the plants survive in a certain conditions and/or of allele frequency that can change the appearance of the offspring from its parents. Out of all of the Brassica oleracea plants the part that is most consistent are the leaves. Each one of the leaves are colored some shade of green. Some of the leavers have veins and edges but mo

Blog Post #6 Adison Akery

March 23, 2018

After looking at our plant recently, I realized it was hardly recognizable compared to the tiny stub it used to be. It has grown from a few small leaves to a foot-tall brussel sprout plant. But how did it grow to be so large? Plants start out as a seed as small as a rough grain of sand. They eventually grow to be much, much larger, and there are reasons for this. The first reason is that the cells within the plant are constantly multiplying. Each cell eventually splits in two through a system called Mitosis. For Mitosis to take place the plant requires energy. That energy is gained in another cellular activity called photosynthesis. Photosynthesis takes place in the chloroplasts in a cell, where sunlight causes enzymes to break down oxygen and hydrogen. When oxygen is released, electrons move down the electron transport chain, where hydrogen ions and the free electrons come together to convert NADP to NADPH. ADP is also converted to ATP inside the thylakoid membrane. I

Blog Post #7- Anthers and Stigmas and Styles, Oh My! By Benjamin Buran

March 06, 2018

Fertilization is the primary way for a plant to reproduce. The main element in fertilization is actually pollen, which most often is brought to a plant from the wind or an insect such as a butterfly. The origin for pollen in fertilization is at the anther, that section of a plant that holds pollen. The pollen is then transferred to the stigma(a part of the pistil which is the female segments of the flower). Flowers such as the Brassica oleracea, have both the male and female parts to reproduce. In the stigma, there is a tube that leads down to the ovary which in turn, has the ovules, and the eggs. The pollen and an ovule must combine together to create a seed. So in arbitrary, the pollen starts at the top of the flower on the anthers. It transfers to the stigma and travels down the tube. When it reaches an ovule, it bursts and two male gametes are released. One gamete blends with the egg and the other does so with the polar nuclei (cells in the embryo sack of the plant).

SPBA #7 Anthers and Stigmas and Styles, Oh My! By William Mahnke

March 05, 2018

In order for a plant to reproduce, it needs to go through fertilization. The main ingredient in fertilization is pollen, which is usually brought to flower either by the wind or from an insect such as a bee. The starting point for the pollen in fertilization is at the anther, the part of the plant that contains the pollen. The pollen is then transferred to the stigma, a part of the pistil which is the female parts of the flowers. Flowers such as the brassica oleracea, have both the male and female parts to reproduce. In the stigma, there is a tube that leads down to the ovary which in turn, has the ovules, the eggs. The pollen and an ovule must combine together to create seed. So in summary, pollen starts out at the top of the flower on the anthers. It transfers to the stigma and travels down the tube. When it reaches an ovule, it bursts and two male gametes are released. One gamete fuses with the egg and the other fuses with the polar nuclei, cells in the embryo sack of the

Anthers and Stigmas and Styles, Oh My by Chase Lyles

March 04, 2018

The way that plants and animals sexually reproduce are very similar. In both instances the female and the male provide one gamete that contain genetic materials for the offspring. This is an image of the male reproductive system, the Stamen. The Stamen produces pollen which in some ways is similar to sperm for animals. This is an image of the female reproductive system known as the carpel or pistil. When some pollen lands on this, it will create a tube that connects the ovaries to the ovules. Because of this genetic information is able to get from the pollen ad into the ovaries so, this will create an embryo that will become a seed.

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