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Class 8

Explore popular questions from Cell Structure and Functions for Class 8. This collection covers Cell Structure and Functions previous year Class 8 questions hand picked by experienced teachers.

Cell Structure and Functions

Correct Marks 4

Incorrectly Marks -1

Q 1. Clochicine interferes with

A

Chromosome replication

Organisation of spindle

C

Chromosome condensation

D

Incorporation of nitrogen bases

Explanation

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'.