Where do the Casparian bands occur?
Epidermis
Endodermis
Pericycle
Phloem
Passage cells are thin walled cells found in
endodermis of roots facilitating rapid transport of water from cortex to pericycle
phloem elements that serve as entry points for substances for transport to other plant parts
testa of seeds to enable emergence of growing embryonic axis during seed germination
central region of style through which the pollen tube grows towards the ovary
A leaf primordium grows into the adult leaf lamina by means of
apical meristem
lateral meristem
marginal meristem
at first by apical meristem and later largely by marginal meristem
Abnormal/anomalous secondary growth occurs in
Dracaena
ginger
wheat
sunflower
Collenchyma occurs in the stem and petioles of
xerophytes
monocots
dicot herbs
hydrophytes
Death of protoplasm is a pre-quisite for a vital function like
transport of sap
transport of food
absorption of water
gaseous exchange
A common structural feature of vessel elements and sieve tube elements are
pores on lateral walls
presence of p-protein
enucleate condition
thick secondary walls
The apical meristem of the root is present
in all the roots
only in radicals
only in tap roots
only in adventitious roots
Procambium forms
only primary vascular bundles
only vascular cambium
only cork cambium
primary vascular bundles and vascular cambium
Which one yield fibres?
Coconut
Oak
Teak
Sissoo