A. X cells I animal cells and Y cells are plant cells
Biotechnology has enabled to improve farming techniques and crop production around the world by increasing plants' resistance to diseases and pests; reducing pesticide applications; and maintaining and improving crop yields.
The polio vaccine works as :
It triggers the immune system to produce antibodies to fight the disease causing agent.
Option 1 is the correct answer.
Explanation:
Polio vaccine is attenuated disease causing virus which helps in the production of antibodies to fight the disease. The immunity for polio gets develop in the individual given polio vaccines.
Jonas Salk discovered the the vaccine for polio by using inactivated polio causing virus.
The polio vaccine produces antibodies in the blood when interaction with polio virus is there.
The paralysis of the legs can be prevented as polio virus do not reach the nervous system and spinal cord of the individual.
There are two types of polio vaccines given across the globe:
oral polio vaccine and inactivated polio vaccine (via injection)
