MCQ
Bell-shaped polygonal pyramid indicates:
- AHigh percentage of young individuals
- BModerate percentage of young individuals
- CLow percentage of young individuals
- DLow percentage of old individuals
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$I.$ This method is also known as biolistic technique
$II. $ In this method cells are bombarded with high velocity micro-particles of gold or tungsten coated with $DNA$ in plants
$III.$ Important crop plants like maize, rice and wheat have now been transformed by this method
Which of the statements given above are correct?