The reproductive parts of an angiosperm are located in the flowers. A flower of an angiosperm usually consists of four whorls namely calyx, corolla, androecium and gynoecium.
Increase the amount of matter present in the object
The mass of an object is a measure of the amount of matter present in the object. Mass is independent of the gravitational field strength; the dependency on gravitational field strength is that of weight. The other property characteristic to matter is the amount of space it occupies, also known as its volume. The ratio of these properties of matter, mass over volume, produces a characteristic property called density.
The microorganisms found in soil are important because they affect the structure and fertility of soil. Certain bacteria responsible for nitrogen fixation converts nitrogen in the atmosphere, so that it can be used by plants. Because of microbes, nutrients and minerals are made available to plants. Soil with more diverse microbe will result in fewer plant diseases and better crop yield.