How do you know that the plant cells in these two images have different jobs, or functions

What is the function of the root cap? a. extra-absorbent cells in the root cap absorb more water and nutrients b. protect the meristematic area of the stem c. contains sensors for sunlight d. increases surface area of the root

During the final stage of the cell cycle, cytokinesis allows the cell to finish dividing, creating with copies of dna. can someone fill in the blanks?

Based on their relative positions in the periodic table, which two elements would have the same number of valence electrons?