31.

Secondary xylem and phloem in dicot stem are produced by

• Apical meristems

• Vascular cambium

• Axillary meristems

• Phellogen

First vascular plant is

• Thallophyta

• Pteridophyta

• Bryophyta

• Spermatophyta

Angular collenchyma occurs in

• Salvia

• Helianthus

• Althaea

• Cucurbita

Kranz anatomy can be obseved in leaves of

• Sorghum

• Spinach

• Mustrad

• Tulip

The term 'bark' refers to

• Phellem, phelloderm and vascular cambium

• Periderm and secondary xylem

• Cork cambium and cork

• Phellogen, phellem, phelloderm and Secondary phloem

What differentiates leaf of dicots from monocots?

• Parallel venation

• Differentiation of palisade and spongy parenchyma

• Stomata only on upper side

• Stomata both on upper and lower sides

Duramen is present in

• inner region of secondary wood

• part of sap wood

• outer region of secondary wood

• region of pericycle

Meristematic tissue in vascular bundle is

• phellem

• procambium

• interfascicular cambium

• fascicular cambium

Quiescent centre is the zone of

• least mitotic activity in the root apex

• least mitotic activity in the shoot apex

• maximum mitotic activity in the root apex

• maximum mitotic activity in the shoot apex

Ectophloic siphonostele is found in

• Adiantum and Cucurbitaceae

• Osmunda and Equisetum

• Marsilea and Botrychium

• Dicksonia and maiden hair fem