16. When plated only in nutrient medium, how much time is required for the protoplast to synthesize new cell wall?

A. 2-5 days
B. 5-10 days
C. 10-15 days
D. 15-17 days

17. Cellular totipotency is the property of

A. plants
B. animals
C. bacteria
D. all of these

18. Agrobacterium based gene transfer is efficient

A. only with dicots
B. only with monocots
C. with both monocots and dicots
D. with majority monocots and few dicots