same population?
To test, if a small electric current affects the growth of maize seedlings, 10 pairs of plants
were grown in parallel boxes, and one member of each pair was treated by receiving a
small electric current. The difference in height between the treated and untreated in ‘mm
were: 6.0, 1.3, 10.2, 23.9, 3.1, 6.8, - 1.9, -14.7, -3.3 and 11.1. Test that small electric
current increases the plant height.
A fertilizer miyin
Answers
Answer:
I AM NOT ABLE TO UNDERSTAND YOUR QUESTION BUT I HAVE GIVEN THE EXPLANATION OF ELECTRICTY AND HUMAN BODY DOWN BELOW.
Step-by-step explanation:
The electrical properties of biological tissues and cell suspensions determine the pathways of current flow through the body and, thus, are very important in the analysis of injuries by electric current and a wide range of biomedical applications such as functional electrical stimulation and the diagnosis and treatment of various physiological conditions with weak electric currents, radio-frequency hyperthermia, electrocardiography, and body composition.
Body resistance (measured in ohms/cm2) is concentrated primarily in the skin and varies directly with the skin's condition.
The resistance of dry well-keratinized intact skin is 20-30 kΩ /cm2.
The resistance of moist thin skin is about 0,5 kΩ/cm2.
The resistance of punctured skin may be as low as 0,2-0,3 kΩ/cm2.
The same resistance is in case of current applied to moist mucous membranes (e.g., mouth, rectum, vagina).
If skin resistance is low, few, if any, burns occur, although cardiac arrest may occur if the current reaches the heart.
If skin resistance is high, much energy may be dissipated at the surface as current passes through the skin, and large surface burns can result at the entry and exit points.
Internal tissues are burned depending on their resistance; nerves, blood vessels, and muscles conduct electricity more readily than denser tissues (e.g., fat, tendon, bone) and are preferentially damaged.
The higher the resistance is the higher production of the heat is (heat = amperage2 × resistance Q = I2 . R . t). If there is an element with high resistance in the circuit, it is usually hot, depending on the value of electric current (amperage) in the circuit and the resistance of the element.
ANY DOUBT KINDLY REPLY
AND MARK ME AS BRAINLIST...