Question

which plant tissue is made up of dead cells showing thickening provide mechanical support to the plant are made of one type of cells​

Answer 1

Collenchyma cells mainly form supporting tissue and have irregular cell walls. They are found mainly in the cortex of stems and in leaves. The major function of sclerenchyma is support. Unlike collenchyma, mature cells of this tissue are generally dead and have thick walls containing lignin

Answer 2

schlerenchyma because it's lignified cell wall make it devoid of protopy