A deciduous leaf's structure is divided into two categories, internal and external, with external structures including the blade, the petiole and the stipules and internal structures including the epidermis, the palisade layer, the spongy mesophyll, the vascular bundle, the stomata and the guard cells. Leaf composition differs from tree to tree but adheres generally to these overarching categories.Know More
Leaves absorb light to facilitate photosynthesis, the process by which trees turn light into energy for growth. They also exchange moisture and gas with the atmosphere to keep trees healthy.
A leaf's internal features perform the following functions:
Internal structures have to do primarily with the functions of the leaf and its part as a component of the tree's larger system.
A leaf's external features are organized in the following ways:
Leaves are vital to the health of deciduous trees and are an important part of forest ecology. Decomposing, they reintroduce nutrients to the forest's soil and allow for the growth of their parent trees and of new vegetation and growth.Learn more in Botany
The scientific name of the most common cultivated mushroom is Agaricus bisporus. Mushroom cultivation in the United States began in the late 1800s. Although there are more than 30,000 species of mushrooms, very few are eaten by humans. Some species are so rare they cost $200 per pound, as of 2014.Full Answer >
Vampires can be divided into two categories: Supernatural creatures in fictional works and real people who believe they are vampires. Fictional vampires tend to live in expensive homes and sleep in coffins or dirt from their home. Live vampires live in typical homes and sleep where they are comfortable.Full Answer >
Modern computer hardware is divided into two categories: main hardware and peripherals. Peripherals are then subdivided into input, output and storage devices. Main hardware components are technically the only requirement for a computer to work, but computers would not be of much use without peripherals. Normally, modern computers employ both.Full Answer >
As of 1970, plant stomata have been divided into eight types: actinocytic, anisocytic, anomocytic, cyclocytic, diacytic, hexocytic, paracytic and tetracytic. A typical stomata formation found in the dicotyledons, or flowering plants, is the anisocytic type that is comprised of a stoma surrounded by three cells of different sizes. The stomata are the microscopic pores on the epidermal layers of land plants that enable them to exchange oxygen, a by-product of photosynthesis, for carbon dioxide.Full Answer >