How do Plants Grow?
So, how do plants grow? This is a very important question because we need plants to grow for your own survival – not just for food but also for their release of oxygen in the air, else, we couldn’t breath.
So what do they need to grow?
Several factors influence (enhance, reduce or limit) plant growth. These factors are either environmental factors (external factors) or plant factors (internal factors).
Plant Growing Needs:
Three major processes regulate plant growth:
These three processes depend on the above-mentioned external and internal factors. When these factors favour plant growth the plant will establish a balance between photosynthesis, transpiration and respiration. This is an important understanding in how plants do grow.
And how do plants grow? Actually what is growing are the plant cells. They do that by
During cell division (mitosis) they simply increase the number of cells. Another way to grow is to stretch the cell, to make it longer (cell elongation). Cell differentiation means that the plant is able to grow different cells that take up different tasks.
Yet, there is not just one plant growth process. Plants make different growth movements, they have different growth speeds and different growth stages.
Tropism - Plant Growth Movements
Plants grow towards the sunny sky, right? This is called positive
Some plants even make a diurnal movement following the sun, this is called
Plant Growth Stages
Four plant stages can be distinguished:
First, a plant seed must germinate. Then it grows into a strong plant (vegetative state).
When the setting is right the plant starts to flower and results in plant reproduction by producing seeds (reproductive stage).
The plant will get weaker and less reproductive when it grows older (senescence).
Plants will go into an inactive stage that is similar to hibernation. They do this when they are faced with harsh environmental factors and their survival is at stake (dormancy).