Microbes and Plant Diseases

Fungi like yeast, neurospora and aspergillus belong to this group.

Fungi shows an unconventional trend that the complexity of the sex organs decreases with the higher groups.

Neurospora crassa, commonly known as the pink bread mold, has been a model organism for genetic studies since the 1940s, particularly for its role in the one-gene-one-enzyme hypothesis.

Oospore is the thick-walled zygote of certain algae and fungi, formed by fertilization of an oosphere.

Bunchy top of banana, potato leaf roll, and tobacco mosaic disease are all well-documented viral diseases that affect plants. Therefore, all of the listed options are correct.

A pulmonary form of anthrax that results from the inhalation of spores of the bacterium. Bacillus anthracis in the wool of some of the infected sheep.  

Ringworm is a common fungal infection of the skin. AIDS is viral, malaria is caused by a protozoan, and typhoid is a bacterial infection.

The litmus is extracted from lichen plants found in the Tundra region.

This is the correct answer as Brassica is resistant to white rust.

Humus. It acts as manure.

Humus provide food to Mushroom and other organisms.

A vast number of fungi can cause spots on the leaves of plants. Most of them are of little consequence. A typical spot has a definite edge and often has a darker border. When lots of spots are present, they can grow together and become a blight or a blotch.

Rots are diseases that decay roots, stems, wood, flowers and fruit. Rots can be soft and squishy or hard and dry. They are caused by various bacteria and fungi. Many are very active in stored fruits, roots, bulbs or tubers.

Crown gall is a serious bacterial disease that infects and kills grapes, roses, fruit trees, brambles, shade trees, flowers, and vegetables. Galls are rounded with rough surfaces and are made up of corky tissue.

This bacterial disease affects apples, pears, fruit trees, roses, and small fruits. Infected shoots wilt and look blackened.