I would say presence of inorganic molecules I THINK not sure.
SI is a base 10 standardized system. I hope this helped and if not I highly recremend talking to your teacher or a parent.
Answer:
A. the root is continuing to grow so the cells are going through mitosis
The correct answer is Chloroplast
The primary function of a leaf is photosynthesis and the chloroplast is the main site for photosynthesis. The rate of photosynthesis is much more in leaves as compared to that of roots. Chloroplast is the place where light and dark reactions takes place. Chloroplast contains a pigment called chlorophyll that absorbs light from the sun for the process of photosynthesis.