Photosystems:
a) are arrangements of light-catching pigments within chloroplasts.
b) are arrangements of thylakoid membranes within the plant cell wall.
c) are the wavelengths of light that reach the earth from the sun.
d) are arrangements of ATP-synthase molecules within chloroplasts.
e) are arrangements of chemicals found in the epidrmal cells.
Ans: a) are arrangements of light-catching pigments within chloroplasts.
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