Abstract
The differences between dicot and monocot roots have to do with the type of vascular system they have. Dicot roots have a secondary xylem and phloem system, while monocot roots only have a primary xylem system. This means that dicot roots can absorb water and nutrients from the soil more easily than monocot roots.
Dicot plants require more water because they have many channels that pull up water and nutrients from the soil. Monocots do not need more water because they have a fibrous root system, and they absorb nutrients from deep in the soil.
Ins this study, the effects of cobaltous ion uptake in a monocotyledon and a dicotyledon was investigated.
Title: The spectrophotometric determination of cobaltous ion uptake between the monocotyledon Allium cepa and the dicotyledon Daucus carota
Purpose: to use the spectrophotometer to determine the uptake of cobaltous ions in the monocotyledon Allium cepa and the dicotyledon Daucus carota.
Importance: negative impacts on living organisms in the environment; this study can give insight into the effects of cobaltous ions in plants
Hypothesis:the dicot Daucus carota will have a greater uptake of cobaltous ions than will the monocot Allium cepa because of the differences between the morphology and physiology of their roots and stems.
Materials: spectrophotometer, cobaltous nitrate, allium cepa, Daucus carota, beakers, cuvettes, graduated cylinder, pipette, small test tubes, parafilm
Methods: submerge the two plant specimens in two separate 0.1 M solution of a solutions of cobaltous nitrate and use the spectrophotometer to determine the absorbance of the solutions once a day for five days.
Independent Variables: cobaltous nitrate
Dependent Variable: absorbance of cobaltous nitrate
Control Group: does not receive treatment with cobaltous nitrate.
Experimental Groups: receives treatment with cobaltous nitrate.
Levels of Treatment (M): 0.0 0.02 0.04 0.06 0.08 0.10
Ethical Considerations: Toxics substances need to be disposed of properly to avoid contaminating the environment.
Statistical Analysis: t-test
Null Hypothesis: To bedetermined. The null hypothesis will either be rejected or accepted.
Vulnerability: small sample size due to limited numbers of plant specimens as a consequence of space availability.
Conclusions: To Be Determined: The hypothesis will either be rejected or supported
Questions: Why was were Allium cepa and Daucous carota used in this experiment? Answer: To compare the uptake of cobaltous ions in a monocotyledon versus a dicotyledon.