Agriculture Reference
In-Depth Information
5
CHAPTER
Level 2
Plant life cycles
Figure 5.1
Autumn colour in the leaves of
Parthenocissus tricuspidata
(Boston ivy), developing in
response to environmental changes
This chapter includes the following topics:
•
Growth and development
•
The seed - viability, germination requirements and dormancy
•
The seedling - hypogeal and epigeal germination, tropisms
•
Juvenile growth
•
The adult plant
•
Senescence and death