In virus-infected plants the meristematic tissues in both apical and axillary buds are free of virus because
the dividing cells are virus resistant
meristems have antiviral compounds
the cell division of meristems are faster than the rate of viral multiplication
viruses cannot multiply within meristem cell(s)
Several South Indian states raise 2-3 crops of rice annually. The agronomic feature that makes this possible is because of
shorter rice plant
better irrigation facilities
early yielding rice variety
disease resistant rice variety
Which one of the following combination would a sugarcane farmer look for in the sugarcane crop?
Thick stem, long internodes, high sugar content and disease resistant
Thick stem, high sugar content and profuse flowering
Thick stem, short internodes, high sugar content, disease resistant
Thick stem, low sugar content and disease resistant
Fungicides and antibiotics are chemicals that
enhance yield and disease resistance
kill pathogenic fungi and bacteria, respectively
kill all pathogenic microbes
kill pathogenic bacteria and fungi respectively
Use of certain chemicals and radiation to change the base sequences of genes of crop plants is termed
recombinant DNA technology
transgenic mechanism
mutation breeding
gene therapy