'Auxin is a growth type of this substance; it regulates plant growth, especially in stems'
hormone
BOTANY: Auxin is a growth type of this substance; it regulates plant growth, especially in stems
Auxin is a growth type of this substance; it regulates plant growth, especially in stems
Auxin is a growth type of this substance; it regulates plant growth, especially in stems
BOTANY
hormone
BOTANY