Question

part a. which is the correct sequence (order) for the stages of mitotic cell division (mitosis) presented by the diagrams below?
diagrams labeled a, b, c, d.
options: (1) a → b → c → d; (2) a → c → d → b; (3) b → a → d → c; (4) b → c → d → a
part b. which process is represented by the diagram below?
diagram showing a sequence of cells with chromosomes.
options: (1) germination; (2) mitotic cell division; (3) fertilization; (4) meiotic cell division

Explanation:

Part A

Step1: Identify each stage

• Diagram A: Cell in interphase (nucleus, chromatin, centrioles starting to move).
• Diagram C: Metaphase (chromosomes aligned at equator).
• Diagram D: Anaphase (chromosomes separating, moving to poles).
• Diagram B: Telophase (cell membrane pinching, nuclei reforming).

Step2: Order the stages

Interphase (A) → Metaphase (C) → Anaphase (D) → Telophase (B). So sequence is \( A
ightarrow C
ightarrow D
ightarrow B \).

The diagram shows a cell with chromosomes undergoing reduction (halving chromosome number) and then division, characteristic of meiosis (reproductive cell division for gametes). Mitosis is for growth/repair (no reduction), germination is seed growth, fertilization is fusion of gametes. So it's meiosis (reproductive cell division).

Answer:

(2) \( A
ightarrow C
ightarrow D
ightarrow B \)

Part B