DP Biology (first assessment 2025)

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Question SPM.1A.SL.TZ0.22

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Date May Specimen-2023 Marks available [Maximum mark: 1] Reference code SPM.1A.SL.TZ0.22
Level SL Paper 1A Time zone TZ0
Command term Question number 22 Adapted from N/A
22.
[Maximum mark: 1]
SPM.1A.SL.TZ0.22

The first day of the menstrual cycle is when menstruation begins. What occurs around day 15 of the cycle?


A.  Formation of a corpus luteum

B.  The placenta starts to secrete progesterone

C.  The end of menstruation

D.  Blood progesterone concentration reaches its maximum

[1]

Markscheme

A

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