Which one of following event does not occur during secondary growth in dicot roots ?
1) Vascular cambium is wavy in the beginning
2) Vascular cambium is completely secondary in origin
3) Cork cambium is developed from outermost layer of endodermis.
4) Two types of medullary rays are formed in the dicot roots during secondary growth
The correct answer is Cork cambium is developed from outermost layer of endodermis.