Multiple Choice
Which of the following best illustrates metaphase I in a 2n = 4 cell?
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16. Cell Division
Mitosis
Multiple Choice
Which statement best describes why a plant root tip is a good example of mitosis at work?
A
Cells in the root tip undergo meiosis to produce haploid gametes that support sexual reproduction.
B
Cells in the root apical meristem undergo mitosis to produce genetically identical daughter cells that enable root growth and repair.
C
Cells in the root tip primarily increase root length by enlarging without cell division, so mitosis is not involved.
D
Cells in the root tip undergo mitosis mainly to create genetic diversity by recombining homologous chromosomes.
Verified step by step guidance1
Understand the role of the root tip in plants: The root tip contains the apical meristem, a region of actively dividing cells responsible for root growth.
Recall the purpose of mitosis: Mitosis is a process of cell division that produces two genetically identical daughter cells, allowing growth and repair in multicellular organisms.
Differentiate mitosis from meiosis: Meiosis produces haploid gametes for sexual reproduction and involves genetic recombination, whereas mitosis maintains genetic consistency.
Analyze the statements: Since root tips are involved in growth and repair, the cells must divide by mitosis to produce identical cells, not by meiosis or cell enlargement alone.
Conclude that the correct description is that cells in the root apical meristem undergo mitosis to produce genetically identical daughter cells, enabling root growth and repair.
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