When the sun shines and then illuminates the light that illuminates the leaves the different leaf colors on each treatment (light, there is little light, and dark) ie green, yellowish and yellowish green indicate a difference to the absorption of light in each plant. The yellow color of the leaves is due to the lack of light entering so that the sprouts experience etiolation, ie yellowing of leaves and stems of plants due to growth in dark places (less light), while the green and yellowish green color indicate the absorption of light done by plant leaves. Kotiledon is still found in some sprouts that have grown as food reserves as long as the leaves have not grown and can perform photosynthesis perfectly. Plants in dark places can not do photosynthesis because they do not get sunlight at all, so no energy is produced and plants become pale. Plants in dark places get only energy from cotyledon / endosperm, but are limited. If the energy is used up and the plant still can not photosynthesize then the plant will die with no sunlight.
