171k views
0 votes
What causes plants to respond positively to sunlight?

User GScrivs
by
8.2k points

2 Answers

4 votes
Auxin causes plants to respond positively to sunlight because these are chemicals in plants that are far from a light resource, which causes the plant to bend towards the sun.
User Abelyao
by
8.4k points
5 votes
Auxin. Cells on the plant that are farthest from a light source have a chemical called auxin cause the cells to elongate. The plant bends towards the light.
User SimonRH
by
7.9k points