5. Auxins are chemicals made by plants that play a part in many physiological roles. One auxin, indoleacetic acid (IAA), is a hormone produced in the meristem of plants. This
substance is transported down the plant's stem to encourage cell elongation and the
bending of the stem towards light. The production of IAA is working in conjunction with
which plant system?
A. Response system
B. Immune system
C. Root system
D. Reproductive system

it would be rhyolitic hope this

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.