Which of the following tissues has dead cells with thick and lignified cells walls, having a few or numerous pits?

Which of the following tissues has dead cells with thick and lignified cell walls, having a few or numerous pits ?

Which of the following tissues has lignified cells ?

Which of the following tissue has lignified cells ?

which one of the following has dead cells

which one of the following has dead cells

which one of the following has dead cells

Which simple permanent tissue consists of long narrow cells with thick and lignified walls having a few or numerous pits

Which of the following wall of guard cells is thick