Within the chloroplast, the light reactions take place in the flattened sacs called thylakoids and the Calvin cycle takes place in the thick fluid called the stroma.
Angiosperms are important to humans in many ways, but the most significant role of angiosperms is as food. Wheat, rye, corn, and other grains are all harvested from flowering plants.
<span>The fluid filled region between the plasma and nucleus is called cytoplasm. This region is a gel like substance and it contain all of the cell structure which is about water and the area that most cell function occur.</span>
