What is the Plant Kingdom
Take a look out your window. You can find plants almost anywhere. High on the top of mountains, under the oceans, in freshwater lakes, rivers and ponds, in dark shady places, and in dry sunny places.
Plants have been on Earth for millions of years and there are hundreds of thousands of different kinds. They are all considered part of the plant kingdom.
Why Are Plants So Important?
Almost
all living things depend on plants in order to survive. Animals depend
on plants for their sugars, as well as their production of oxygen to
breathe.
Plants go through a process of photosynthesis, which is
when plants use sunlight to help them produce food (sugar) and oxygen.
This process is cyclical, or a never ending process, so there is always
food and oxygen being made.
Animals can't get their food directly
from the sunlight as plants can, so they rely on plants (or other
animals who have eaten plants) to get the sugars and nutrients for
survival.
Categories of the Plant Kingdom
All
plants are part of the plant kingdom. They then get broken down into
smaller groups based on characteristics like size, how they reproduce
and make new baby plants, and if water and nutrients (food) can travel
throughout the plant.
In the plant kingdom, plants are broken into two groups, vascular and non-vascular.
Characteristics of All Plants
- Plants make their own food through photosynthesis.
- Plants don't move from place to place.
- Plants react to light, temperature and water
- Plants have chlorophyll, which is what makes leaves green and which is also needed for photosynthesis to take place.
- Plant walls (the outside of plants) are made out of a special material called cellulose.
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