Nitrogen Cycle

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms. This transformation can be carried out by both biological and non-biological processes. Important processes in the nitrogen cycle include fixation, mineralization, nitrification, and denitrification. The majority of Earth's atmosphere (approximately 78%) is nitrogen, making it the largest pool of nitrogen. A 2011 study found that nitrogen from rocks may also be a significant source of nitrogen.

Ecology

Ecology is the scientific study of the relations that living organisms have with respect to each other and their natural environment. Variables of interest to ecologists include the composition, distribution, amount (biomass), number, and changing states of organisms within and among ecosystems.

Some Amazing Plant’s Facts

• Venus-fy-trap, pitcher plant, bladder wort etc are insect eating plants, they derive thier nitrogen from them.
• In California's Wheeler Park, there is a Bristlecone pine tree with an estimated age of 5,000 years.
• An american coast red wood reaches a height of 110 m.

Plant Diseases

Like humans, diseases also affects plant kingdom. Following given some commonly occurring diseases in plant kingdom.

1. Viral Disease- Here given some viral diseases of plants.

Mosaic disease of tobacco- This disease caused by Tobaco Mosaic Virus (TMV). When affected the leaves of a plant get shrinked and small. The chlorophyll of the leaves damaged. To control this disease from spreading, the affected plants should be burnt.

Plant Hormone

The Charles Darwin was the first scientist to dabble in Plant Hormone Research.
Darwin in his book "The Power of Movement in Plants" presented in 1880 first describes the effects of light on movement of canary grass (Phalaris canariensis) coleoptiles. Following 5 types of hormones are found in plants-

Photosynthesis

Photosynthesis is the process of converting light energy to chemical energy and storing it in the bonds of sugar. This process occurs in plants and some algae. Plants need only light energy, CO2, and H2O to make sugar. The process of photosynthesis takes place in the chloroplasts, specifically using chlorophyll, the green pigment involved in photosynthesis.