Here's why:
* Endogenous usually refers to something originating or developing from within an organism. This is commonly used in biology to describe the growth of tissues from within the plant.
* Trees, like all plants, have a complex vascular system that transports water and nutrients throughout the plant. This system is responsible for growth, and it's not specifically "endogenous" in the way the term is usually understood.
To clarify your question, you might be thinking of:
* Angiosperm trees: These are the flowering plants and are characterized by having enclosed seeds (e.g., oak, maple, cherry).
* Gymnosperm trees: These are non-flowering plants with exposed seeds (e.g., pine, fir, spruce).
If you can provide more context or a specific example of what you're referring to, I can help you better understand the type of tree you're interested in.
