Hypogeal germination of broad bean and root growth

Here is a time lapse of a Broad bean showing hypogeal germination and root growth.

Hypogeal
‘Hypogeal’ means ‘underground’. 
This is when the cotyledons of the germinating seed / bean remain below ground.
salts in the soil.

Roots and root hairs
The main functions of root are:
Absorption of water and nutrients,
Fixation of the plant to the soil,
Root bears unicellular root hairs.

Conduction of water and nutrients to aerial parts of plants

Root cap.

It is a cap-like structure at the tip of root. It cover and protects the growing point from injury as it pushes through the soil.

Filmed by Neil Bromhall www.complete-gardens.co.yk

More of my time-lapse sequences can be found on Youtube

Garden software encyclopaedia with 3,500 garden plants and 9,000 photographs please see www.complete-gardens.co.uk