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.

Plant Tissue

• Tissues are sets of cells which are build of atoms and elements at the most basic level.
• Plants are build of mainly three parts- roots, stems and leaves and these parts of plants are made of tissues to work together.
• Scientists classify plant tissues on the basis of structure and function.

Some Common Fruits/Type of Fruits & Their Edible Parts

Fruits	Type Of Fruits	Edible Parts
Apple, Pear	Pome	Fleshy thalamus
Banana	Berry	Mesocarp
Cashewnut	nut	cotyledons, fleshy thalamus

Plant Morphology

Plant morphology or phytomorphology is the study of the physical form and external structure of plants. This is usually considered distinct from plant anatomy, which is the study of the internal structure of plants, especially at the microscopic level. Plant morphology is useful in the identification of plants.