The first land plants appeared around 470 million years ago. All of the following are evolutionary traits that enabled plants to survive in a dry environment EXCEPT: a. Cell walls made up of cellulose.
b. Roots and root hairs, which absorb water and nutrients from the soil.
c. Photosynthetic pigments, which absorb light energy and provide energy to carry out photosynthesis.
d. Stomates, which open close to exchange photosynthetic gases and minimize water loss.