Phloem in gymnosperms lacks
Albuminous cells and sieve cells
Sieve tubes only
Companion cells only
Both sieve tubes and companion cells
Nucleus is absent in
Xylem tissue is composed of
Passage cells are thin walled cells found in
Complex tissue does not occur among
Protoxylem is the first formed xylem. If the protoxylem lies next to phloem what kind of arrangement of xylem would you call it?