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Transcript of Radiant Radishes
to Radiation: A seed of a plant holds the undeveloped plant embryo in a
protective coating called the testa.
Seeds are capable of performing many functions in order for the
plant to grow; including perennation (surviving from one growing
season to the next)
Because of the protective coating, seeds are able to withstand rough
conditions such as drying out, freezing, heat radiation or acidity.
The sprouting of a seed is called germination. This occurs after the
seed has absorbed enough water and sunlight for the plant to emerge
from the seed and begin to develop it’s first set of leaves.
Radish seeds germinate between 3-5 days Introduction
to Seeds: If excess heat or radiation is added to the radish seeds, then the seeds will react in a negative way and not sprout as much as the seeds without treatment of radiation or heat. Hypothesis: Materials: •Independent Variable: The amount of heat and radiation applied to radish seeds Variables: Method: Procedure: Findings: Original Hypothesis: If excess heat or radiation is added to the radish seeds, then the seeds will react in a negative way and not sprout as much as the seeds without treatment of radiation or heat. Conclusion: by Shannon Moore How does radiation and
heat effect the germination
of plants, specifically
radish seeds? Plants use energy from the sun to create food during a process called photosynthesis.
Some of the energy from the sun is in the form of Ultraviolet radiation, or UV rays. UV rays are a kind of electromagnetic radiation produced by the sun.
Electromagnetic waves can also be produced by appliances we use in everyday life such as microwaves, radio waves, television waves, and many more •radish seeds (50)
•5 Zip-Lock bags
•water and a dropper
•a sunny window I will have five test groups, one control group, two groups of seeds that were exposed to electromagnetic radiation (for 10 and 20 seconds) and two groups that were exposed to heat from the oven (for 10 minutes and 20 minutes).
Data will be measured by counting the number of seeds that have sprouted by the end of a seven day period. This experiment requires 50 radish seeds, 10 for each group. In this experiment the microwave will be used to expose the radish seeds to electromagnetic radiation. Electromagnetic radiation can sometimes provide heat so the heat will be represented in this experiment by baking the seeds in an oven before allowing them to germinate. •Controlled Variables: amount of sunlight (each bag will be placed in the same window), amount of water (each bag will have a napkin dampened with the same amount of water), all seeds will be placed in an identical Ziploc bag, each bag will contain 10 radish seeds, each group will be given the same amount of time to germinate, all microwaved seeds will be microwaved for the same time and all baked seeds will be baked for the same time. •Dependant Variable: The number of seeds sprouted from each group •Control Group: A bag of 10 radish seeds will not be microwaved or baked and will be
placed on the window beside the other two groups. Preheat oven to 250 degrees. Record observations and number of seeds sprouting Tape the 5 bags in a sunny window and observe seeds for seven days. Do nothing to the 10 control radish seeds, place in ziplock bag with moist paper towel. Moisten a paper towel and place in the ziplock bag. Place the 10 radish seeds into corresponding bags Microwave 10 seeds for 10 seconds and another 10 seeds for 20 seconds Label each ziplock bag with the type of treatment and time Use foil to create a bowl for seeds and bake 10 seeds for 10 minutes and 10 seeds for 20 minutes. The seeds that were microwaved did end up sprouting, and the 10 second seeds even matched the control group. However, it can been seen from the data that the longer the seeds were exposed to radiation, the longer it look for the seeds to begin sprouting. Therefore my hypothesis is supported by the data collected.
Adding heat to the seeds proved to support the hypothesis as well sense they did not sprout at all.
I would test the baked group with less heat, perhaps no more than 2 minutes in the oven.
I would also test more microwaved times to get a wider variation Changes: