Millions of years ago, many plants use carotenoids as their primary pigment. today most plants use chlorophyll. what could explain this cahnge

I feel like we’re taking the same test rn

haploid cells;

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.