A student decides to set up an experiment to see if detergent affects the growth of seeds. he sets up 10 seed pots. 5 of the see
d pots will receive a small amount of detergent in the soil and will be placed in the sun. the other 5 seed pots will not receive detergent and will be placed in the shade. all 10 seed pots will receive the same amount of water, the same number of seeds, and the same type of seeds. he grows the seeds for two months and charts the growth every 2 days. what is wrong with his experiment?
By placing the pots with detergent in the sun and the pots
without detergent in the shade, the student is not comparing the effects that
detergent has in the growing rate of the seeds under the same conditions;
besides, he does not have a control group. Therefore, he will not be able to
determine if the growing rate of the plants were affected by the detergent, the
lack of sunlight, or a combination of both factors.
Oxygen in the atmosphere is a molecule because it contains molecular bonds. It is an element because it is made from atoms of only one element - oxygen.
Seed banking is one of the most efficient methods used in biotechnology and genetics wherein a seed is stored in a "bank" in order to preserve its genetic information. The procedure is important because the risk of a plant species getting endangered would be minimised.
