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A: Endodermis is present between the general cortex and pericycle in the maize stem.
R: Eustele is present in maize stem.
Atactostele is present in monocot e.g., in maize
A: Bast fibres are collenchymatous fibres.
R: Fibres are absent in secondary phloem.
Fibres are present in secondary phloem.
A: Oldest layer of sapwood lies just outside vascular cambium.
R: Sapwood contains actively conducting vessels and occupies the central part of the stem.
Heartwood occupies the central portion.
A: Bark is all the tissue outside steler cambium.
R: Bark is formed due to the activity of phellogen only.
A: According to Clowes, there are three histogens in monocot root.
R: In dicot roots, innermost groups of initials form root cap.
In dicot root, the innermost group of cells form a central stele.
A: Intercalary meristems are commonly located at the base of leaves, above the nodes or below the nodes.
R: Vacuoles are large-sized in the cells of intercalary meristem.
A: Cells of sclerenchyma have thickened secondary walls.
R: Cells have deposition of lignin.
A: Sieve tubes and companion cells are related ontogenetically.
R: Both develop from the same mother cell.
A: In monocot roots, pericycle gives rise to lateral roots and cork cambium.
R: It has tetrach vascular bundles usually.
It has polyarch vascular bundles.
A: Complementary cells are cut-off by phellogen towards outside.
R: Phellogen is partially secondary in origin.