Correct Marks 4
Incorrectly Marks -1
Q 1. Clochicine interferes with
Organisation of spindle
Incorporation of nitrogen bases
Alkaloid colchicine (produced by many plants of family Liliaceae) inhibits the microtubules to assemble to form spindle fibres. Therefore, alkaloid colchicine interferes with mitosis and chromosome segregation and the cell division is arrested at metaphase in presence of colchicine. So, the correct answer is 'Organisation of spindle'.