Plant Growth and Development
Banyan tree continues to grow for thousands of years and some others
particularly annual plants cease growth within a season or within a year. Can
you understand the reasons? How does a zygote give rise to an embryo and an
embryo to a seedling? How does a new plant structure arise from the
pre-existing structure? Growth is defined as an irreversible permanent increase
in size, shape, number,volume and dry weight. Plant growth occurs by cell
division, cell enlargement, differentiation and maturation.
Bamboos are evergreen grasses and certain species of it can
grow at the rate of growth 91 cm per
day. The Saguaro Cactus is a tree like cactus and is a slow growing plant. The
rate of growth is one inch in the first ten years and it does not begin to
flower until it is about 60 years old. It’s lifespan exceeds 150 years and
takes 75–100 years to grow a side arm.