question_answer 17)

  Cells of this tissue are living and show angular wall thickening. They also provide mechanical support. The tissue is (a) xylem                             (b) sclerenchyma             (c) collenchyma                (d) epidermis

Answer:

                  (c) Collenchyma This tissue provide mechanical support mainly to herbaceous younggrowing stem. The cells have angular thickening at the corners. Whereas, xylem isconductive complex tissue, transports water and mineral. Sclerenchyma is dead at maturity, present in hard areas of the plant. Epidermis isusually a single layered structure present on the entire body surface of the plant.