Which of the following is a permanent tissue?
Apical
Intercalary
Lateral
Which of the following part of xylem is living ?
Xylem Sclerenchyma
Xylem Parenchyma
Vessels
Which of the following condition is described as 'exarch' ?
Protoxylem towards the centre and metaxylem towards the periphery.
Protoxylem towards the periphery and metaxylem towards centre.
Both towards periphery.
What is deposited on the cell walls of sclerenchyma cells ?
Pectin
Suberin
Lignin
Trichomes are extensions on :
Root
Stem
Leaf
Dorsiventral leaves are a characteristic of :
Dicots
Monocots
Gymnosperms
What type of venation do dicot leaves have ?
Parallel
Reticulate
None
What can be defined as 'part of secondary xylem which comprises dead elements with lignin deposit' ?
Sapwood
Springwood
Heartwood
