When it comes to spermatophyta, you are going to want to remember that this is something that is broken down into two subcategories. These subcategories would be angiosperms and gymnosperms. Simply by looking at their names, you can begin to imagine some differences between the both of them.
This is a good thought to get the ball rolling. As you are going to discover, there are numerous differences between angiosperms and gymnosperms worth observing. At the same time, it is not a bad idea by any means to brush up on spermatophyta a little.
What Are The Differences Between Angiosperms And Gymnosperms
Spermatophyta must meet a certain criteria, before it can be determined as such. For example, it will include any plant with bodies that are differentiated towards roots, leaves, and stems. The vascular bundles must be nicely developed, as well. Finally, you will definitely want to look for examples of plant life that will produce seeds.
Once we understand the above definition, understanding angiosperm and gymnosperm differences is going to be considerably more straightforward. It will be easier to appreciate the fact that angiosperms refer to a seemingly endless catalog of herbs, trees, and shrubs. Dicotyledon is the first subcategory within angiosperms, while the second one is known as Monocotyledons. Grass would be a good example of what we are talking about.
Then you have gymnosperms. If you find a woody tree with a cone-like appearance, then there is a very good chance that you have come across an example of what we’re talking about. Do not expect flower or fruit from any of these things. What you are going to want to expect instead are seeds. Since the seeds are not covered in any form of fashion by fruit walls, you are going to find these seeds naked!
Angiosperms also showcase double fertilization, with the ovules being located within the ovaries. With gymnosperms, you want to keep in mind that you are talking about something in which the reproductive structure consists of a cone which is unisexual. The ovules are going to be exposed, as well, which we now understand means they will not be found in the ovaries. Wind alone assists in the crucial pollination process, and the phloem has nothing in the way of companion cells.
On the other hand, companion cells are indeed present with angiosperms. Wind, bugs, and even bats can play a role to one degree or another in the process of successful pollination.
