Healthy And Disease free

Distinction Between Healthy And Diseasefree

(a) Differentiate between healty and disease free? (b) Distinguish between symptoms and signs of disease.

Mention what kind of surroundings will keep you helathy and disease -free.

Which of the following should be used as an explant to generate a disease free plant ?

In which of the following phenomena can many plants be grown from one parent in disease-free conditions?

Five mice in a stable population of 500 are intentionally infected with a contagious disease to test a theory of epidemic spred that postulates the rate of change in the infected population is proportional to the product of the number of mice who have the disease with the number that are disease free. Assuming the theory is correct, how long will it take half the popullation to contract the disease?

The organism which spread the disease from and infected person to a healthy person is called ……………….

(A) : Meristem culutre is used to produce disease free plants. (R): The apical meristem is free from pathogen specially viruses.

Mentin any two conditions that will help you ramian disease -free.