Chapter: 11th Botany : Chapter 3 : Vegetative Morphology of Angiosperm
Characteristic features of Root
The root is non-green, cylindrical descending axis
of the plant that usually grows into the soil (positively geotropic). It
develops from the radicle which is the first structure that comes out when a
seed is placed in the soil. Root is responsible for absorption of water and
nutrients and anchoring the plant.
Characteristic features
•
Root is the descending portion of the plant axis.
•
Generally non-green in colour as it lacks
chlorophyll.
•
Does not possess nodes, internodes and buds
(Exception in sweet potato and members of Rutaceae, roots bear buds which help
in vegetative propagation)
•
It bears root hairs (To absorb water and minerals
from the soil)
•
It is positively geotropic and negatively
phototropic in nature.
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