question_answer 27)

  Find out incorrect sentence (a) Parenchymatous tissues have intercellular spaces. (b) Collenchymatous tissues are irregularly thickened at corners. (c) Apical and intercalary meristems are permanent tissues. (d) Meristematic tissues, in its early stage, lack vacuoles.

Answer:

  (c) Parenchyma serves as a packing tissue in plants therefore they do not have intercellular spaces. Collenchymatous tissues are mechanical tissues in the plants and are characterized by deposition of cellulose at the corners of the cell, which leads to localized thickenings of the cell wall. Apical and intercalary merited bring primary growth (increase in height) and secondary growth (increase in diameter) respectively and are classified under meristematic tissues. Meristematic tissue are dividing units of the plants and contain dense cytoplasm and large nucleus with few or no vacuoles at all.