In the leaves plants make their own food there. In humans, the only to gain these macromolecules is to consume plant matter, or consume plant-eating animals (herbivores). Plants have the unique ability of producing their own food through a process called photosynthesis. Though, sometimes people also grow leaf vegetables (spinach, cabbage, lettuce etc), root vegetables (carrot, potato, onion etc) and sometimes herbs (basil, mint coriander etc). Trees sustain the ecosystem through their roots by preventing soil erosion during floods through holding the soil in place. Another one of the basic parts of a plant is the stem. Trapping sunlight is important for the plants to do.

Trees growing on one acre of land are estimated to consume six tons of carbon dioxide and produce four tons of oxygen beneficial to about eighteen people in a year.

These gardens are used mainly for growing decorative plants and flowers to augment the overall beauty of the house.

The flowering plants are distinguished from other seed plants by a series of apomorphies, or derived characteristics. The leaves have two main jobs. Any one of the following measures can be suitably applied in deterĀ­mining the growth rate and total growth of the individual organs of a plant or the plant taken as a whole: (a) Increase in weight, (b) Increase in volume, (c) Increase in height, One of the basic parts of a plant are the leaves. Measurement of Growth in Plants: Rate of growth can be measured by various ways. Essay on the Introduction to Flowering Plants: The flowering plants or angiosperms (Angiospermae or Magnoliophyta) are the most diverse group of land plants. The flowering plants and the gymnosperms are the only extant groups of seed plants. In this process, plants are able to produce macromolecules such as carbohydrates that cannot be produced in animals or humans.

Mainly the stem has two functions. In order to be a plant, it has to have leaves. Essay # 3.