The tissue which is a part of primary meristem and lies between the region of permanent tissues isApical meristemLateral meristemIntercalary meristemNone of the above

The correct answer is Intercalary meristem.

Here's why:

1. Apical meristem: This is located at the tips of roots and shoots and is responsible for the primary growth of the plant, making the plant grow in length.

2. Lateral meristem: This is located along the sides of a plant, contributing to secondary growth, or increase in girth and thickness.

3. Intercalary meristem: This is located at the base of leaves or internodes (the stem region between two nodes). It is a part of the primary meristem that gets left behind during the process of differentiation. It helps in the longitudinal growth of the plant, especially in grasses and monocots, and is found between the regions of permanent tissues.

4. None of the above: This option is incorrect because the intercalary meristem fits the description given in the question.

So, the tissue which is a part of the primary meristem and lies between the region of permanent tissues is the Intercalary meristem.