5 Stages Of Growth Of Plants Essay

Germination, growth, flowering, seed formation, and death are the five stages of growth in any plant life. Annual plants go through these stages in one growing season. Biennials have a two-year cycle where the second year's plant grows from the root system of the first year's plant. Perennial plants have the same cycle as annual plants except growth, flowering, and seed formation occur many times before the plant dies. Annual plants used for fiber are harvested at the end of the growing season, allowed to dry in the field, and then processed into fiber. Fiber from trees is derived from logs of various ages, and fiberized by one of several methods.

The mechanical properties are influenced by several external effects, which can result in wide ranges of tolerance of their parameters. Due to this fact, harvest, storage, and processing have to be

1.7 MERITS OF COMPOSITE MATERIALS

• Composite materials have high toughness and possess good dimensional stability. Their good wear resistance under heavy load is a noted feature. They generally provide electrical insulation and are non magnetic.

• They have good shelf life at room temperature and are relatively easier to use in comparison with other materials. They can be fabricated into different shapes of required size and properties that can be tailor-made with each composite type; Concurrent engineering (design for manufacture) concept can be used. Complex shapes can be manufactured at lower cost compared to fabricated or machined metal alloys.

• They provide reductions in cost of tooling, making prototype and fabrication Production equipment generally operates at lower pressures than with metals.

• They have high impact resistance and high integral strength at lower manufacturing cost. They are generally non corrosive.

• They have high strength-to-weight or modulus-to-weight ratio with less density. They have remarkable thermal insulation