Answer:
Vesicle
Explanation:
Vesicles are organelles which are found in cells and are involved during the process of exocytosis, endocytosis or movement of materials within the cell.
In the question , The leaves absorb the nutrients in the fertilizer and look healthy. If a cell is compared to a plant, the organelle which would help transport fertilizer from the soil to the leaf would most likely be the vesicles.
Someone who is heterozygous for a recessive allele that codes for a disorder of some sort will not express the disorder in his or her genotype, but would be considered a carrier of the allele, and could pass it on to his or her offspring if the other parent is either heterozygous or homozygous for the recessive allele.