what is mean by following terms:
1.Quarantine: Quarantine is the strict process of isolation imposed on ships, human, plants or animals on arrival at a port from other places to prevent the spread of any communicable diseases carried by them.
2. Cultivar: Cultivar is a variety of plants with desirable characteristics that are selected, created as well as maintained for cultivation in future. Normally ornamental plants like roses, daffodils, carnations, camellias etc are maintained as cultivars.
Quarantine "is used to separate and restrict the movement of well persons who may have been exposed to a communicable disease to see if they become ill.". The term is often erroneously used synonymously with isolation, which is to separate ill persons who have a communicable disease from those who are healthy."
A cultivar is a plant or grouping of plants selected for desirable characteristics that can be maintained by propagation. Most cultivars have arisen in cultivation but a few are special selections from the wild. Popular ornamental garden plants like roses, camellias, daffodils, rhododendrons, and azaleas are cultivars produced by careful breeding and selection for flower colour and form. Similarly, the world's agricultural food crops are almost exclusively cultivars that have been selected for characteristics such as improved yield, flavour, and resistance to disease: very few wild plants are now used as food sources. Trees used in forestry are also special selections grown for their enhanced quality and yield of timber.