The Growth of Bean Seedlings Experiment
Growth of a Beans Experiment
Aim: To compare the growth of bean seedlings in a different soil
solution.
Background Knowledge:
Plants make there own food by photosynthesis. They need light and CO2
from the atmosphere and the water absorbed from the soil.
Plants also need very small quantities of minerals for healthy growth.
Mineral ions are absorbed through the roots from the dissolved
chemicals compounds in the soil. When garden centres sell bottles of
“Plant Food” they are selling solutions of some of the important
minerals; these can be added to the soil in which the plants are
growing. When plants are unable to absorb enough an important mineral
they show signs of deficiency.
If to little nitrate, phosphate, potassium, iron, magnesium, sulphate
or calcium is absorbed by the plant, its appearance and growth will be
affected.
For instance, potassium helps photosynthesis and magnesium is needed
for the plant to manufacture chlorophyll. If magnesium is in short
supply, the leaves, particularly the old ones become moulted or pale.
Iron is part of the chlorophyll molecule and shortage of the mineral
will make leaves pale.
A few substances, known as trance elements may even be toxic to the
plant. Copper is one of the trace elements.
Nitrate, phosphorus and potassium are the substances which are most
frequently in short supply. In soils nitrogen is the most important
because it combines with the sugar produced during photosynthesis to
form amino acids. These amino acids join together to form large
protein molecules. Plants which lack nitrogen grow very poorly.
Sugar + Nitrate à amino acids à Proteins
(From photosynthesis) (From Soil)
General Planning:
* I will take three small pots and fill them full of soil.
* I shall then put one
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Arabidopsis thaliana (L.) Columbia ecotype suspension- cultured T87 cells were maintained at 22°C in JPL3 medium with continuous illumination and shaking at 100g. Two-week-old cells were sieved through 500 μm stainless mesh and the remaining filtrate was transferred to a flask containing 20 ml of fresh JPL3 medium for subculture.
Gregor Mendel was born into a German family, as a young man Mendel worked as a gardener and studied beekeeping. In his later life Mendel gained his fame as the founder of the modern science of genetics. The research that was his claim to fame was his pea plant experiment. Mendel looked at seven different characteristics of the pea plants. For example with seed colors when he bred a yellow pea and green pea together their offspring plant was always yellow. Though, in the next generation of plants, the green peas reemerged at a 1:3 ratio. To explain what he had discovered, Mendel put together the terms “recessive” and “dominant” in reference to specific traits. Such as, in the previous example the green peas were recessive and the yellow peas
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Write a composition based on the novel you have studied discussing the basis for and impact of individual choices. What idea does the author develop regarding choices?
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Have you ever wondered if a plant knew it was about to be dinner? Heidi Appel and Rex Cocroft were perplexed with whether or not plants could communicate with, not only themselves but also other plants, about chemical defenses. According to new research, plants may have their own “cell”-phones. When a hungry caterpillar starts chowing down on a bitter leaf that might just be the case.
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