Plant Structure. LEAVES: · Leaves are the plant organs where most photosynthesis occurs. Their broad flattened structure optimizes the surface area exposed to light. Plant morphologists have developed a hypothesis, supported by scientific evidence, that leaves are flattened stems between which tissue has developed. · The shape and structure of leaves vary considerably from species to species of plant, depending largely on their adaptation to climate and available light, but also to other factors such as grazing animals, available nutrients, and ecological competition from other plants.
7. Record how many seeds germinate in each dish each day. Materials: 8 petri dishes, 8 pieces of filter paper, 80 little marvel pea seeds, 50 mL of distilled water, and 50 mL of each of the following NaCl solutions: 0.01%, 0.1%, 0.5%, 1%, 2%, 3%, 4% Analysis: The first day after watering our seeds none of them had germinated, but after the weekend passed seven seeds had germinated in the distilled solution. Three seeds germinated in the .1% solution and one germinated in the .01% solution. In the rest of the solutions none of the seeds had germinated.
Compared Rates of Photosynthesis Using Different Light The rates of photosynthesis were compared in different lighting conditions. Two syringes were filled with a bicarbonate detergent solution. Ten leaf diskettes were placed in each syringe filled with the bicarbonate solution and then placed in different lighting conditions. The color of the lights which the syringes were placed were red and white. After the two syringes were placed underneath the lights then results were recorded after certain periods of time.
Coloured Cellophanes effects on Photosynthesis Background Theory: For photosynthesis to take place a plant requires carbon dioxide, water, light, chlorophyll and a suitable temperature. The necessity of these factors can be demonstrated by simple experiments either on whole plants or leaves (Moment, Habermann 1973). Autotrophs are organisms capable of making their own food. Autotrophs are also called producers because they can use the energy in sunlight or chemicals to produce food. The process of photosynthesis is when plants use the energy in sunlight to convert water and carbon dioxide into oxygen and high-energy carbohydrates.
Light energy has a major role in this process. Without this energy, photosynthesis is not possible to occur. In this experiment, I will find out the correlation between light energy, rate of carbon dioxide, and rate of photosynthesis. I will place the beaker containing the plant in three different distances and measure the resulting bubbles oxygen produced. The number bubbles produced shows the affect of light energy to the rate of photosynthesis.
Using salt on roadways and driveways has become the norm, but as some people have discovered, using salt to clear driveways seems to be affecting the grass that grows next to it come spring time. Hypothesis If I put rock salt on a patch of new grass, then the grass will not grow normally. Controlled Experimental Method The constant variables in this experiment are; * The amount of water given to the grass (5cc) * The amount of soil in each cell (1ft by 1ft by 6in) * The type of soil * The amount of light given (13 hours) * The temperature the grass were grown at (70 F) * The depth of the grass seed (1cm) Step 1. Planting grass seeds A. Fill all of the cells in both trays ½ full with soil.
This strategy is effective as the plants grow up to four times faster and seasonal crops can be harvested all year round. Also the surplus water can be recycled, which cuts use by 20%, and also the plants need fewer chemical pesticides as they are being grown indoors. However, as the plants are not grown in soil, the produce is bland and cannot produce true organic produce. Also the heated greenhouses and lights are wasteful and the greenhouses are an eyesore. An example of aquaponics, which is a combination of hydrophonics and aerophonics, in the UK is in Wakefield, West Yorkshire.
Someone believe that diet soda is healthy because it is with low or even none calories which makes us not easy to gain weight comparing to drinking regular soda. In addition, diet soda gives benefits for the diabetes, as the artificial sweeteners will not affect their blood sugar. It will not raise blood glucose level due to the lack of carbs in diet soda. Furthermore, due to the fact that diet soda does not have sugar which produces an acid in the month causing plaque production. With consideration of plaque reduction, diet soda is a better choice.
Screw one normal light bulb on a a lamp and an LED light bulb on the other. Place the first plant in a dark room with no form of air conditioning, in this room place the the lamp that you have put the LED bulb on, in the room 13in’ from the plant. Then place the second plant in the same type of room as the first but with the lamp that has the normal bulb 13in’ from the plant. Place the last plant outside exposed to sun light. Then after a course of two weeks measure the hight of each plant in inches, and wright the data for each plant down.
They have been able to verify that sun-care products are applied in an inconstant manner, as only 2/5 of the sample subjects used them regularly, whereas most of the children (62%) applied them incorrectly. Moreover, children do not use T-shirts and sun glasses often enough as a protection from the UV rays By sensitizing the parents, their children’s behavior can be influenced, as confirmed by the literature documenting the close association between the education of parents regarding proper sun protection methods and the reduced incidence of sun burning their