The two kinds of elements present in xylem are:
Sieve tube and vessels
Guard cells and fibres
Sieve tube and companion cells
Tracheids and vessels
Question 4 Which cell does not have perforated cell wall? (a) Tracheids (b) Companion cells (c) Sieve tubes (d) Vessels
Question 33 The water conducting tissue generally present in gymnosperm is (a) Vessels (b) Sieve tube (c) Tracheids (d) Xylem fibres
Which one of the following has cytoplasm but no nucleus : (a) xylem vessel (b) sieve tube (c) tracheid (d) companion cell