Nucleus is absent in
Sieve tube
Cambium
Phloem parenchyma
None of these
Primary vascular tissues are derived from
The movement of carbohydrates from the leaves of the tree to the root is primarily a function of the
Which of the following tissue gives tensile strength against bending and swaying
The vessel elements of angiosperms differ from other elements of xylem in having
The phloem of angiosperms differs from that of other vascular plants by the presence of