61.

A common structural feature of vessel elements and sieve tube elements is

• thick secondary walls

• pores on lateral walls

• presence of P-protein

• presence of P-protein

Root hairs develop from the region of

• Maturation

• Elongation

• Root cap

• Root cap

Plants which produce characterstic pneumatophores and show vivipary belong to

• Mesophytes

• Halophytes

• Psammophytes

• Psammophytes

The vascular cambium normally gives rise to

• Phelloderm

• Primary phloem

• Secondary xylem

• Secondary xylem

Identify the wrong statement in context of heartwood.

• Organic compounds are deposited in it

• It is highly durable

• It conducts water and minerals efficiently

• It conducts water and minerals efficiently

Casparian strips occur in

• Epidermis

• Pericycle

• Endodermis

• Cortex

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