Question

conclusion: 1. the spinach leaf looks green, but your chromatogram demonstrated that other pigments are in the leaf as well. why can you not readily see the other pigments in the leaf?

Explanation:

The green pigment chlorophyll is in high concentration and masks other pigments. It absorbs most wavelengths of light except green which it reflects, making the leaf appear green. Other pigments like carotenoids and anthocyanins are present in smaller amounts and their colors are hidden by the dominant green of chlorophyll under normal light - conditions.

Answer:

The high concentration of green - pigment chlorophyll masks other pigments.