The incorrect sentence is c) Apical and intercalary meristems are permanent tissues.
Explanation: Apical and intercalary meristems are not permanent tissues; they are actively dividing tissues responsible for growth. Permanent tissues are those that have stopped dividing and have specialized functions.
Why other options are correct:
a) Parenchymatous tissues have intercellular spaces:
Parenchyma tissues are known for having large intercellular spaces. These spaces allow for gas exchange, storage, and flexibility.
b) Collenchymatous tissues are irregularly thickened at corners:
Collenchyma tissues have thickened cell walls, particularly at the corners. This thickening gives them structural support.
d) Meristematic tissues, in its early stage, lack vacuoles:
Meristematic cells are actively dividing and have minimal organelles, including small or no vacuoles. This is because they are focused on rapid cell division and not storage.