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CAIE IGCSE Biology 16.5.4 Role of Hormones in Controlling Questions

Explain how FSH, LH, oestrogen and progesterone control the menstrual cycle and pregnancy.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • link FSH to follicle maturation and stimulation of oestrogen secretion
  • link the LH surge near day 14 to ovulation and release of the egg
  • link oestrogen to lining repair and progesterone to lining maintenance, including pregnancy

CAIE IGCSE Biology 16.5.4 Role of Hormones in Controlling Questions question 1

[Maximum number: 4]

Question (a)

(a)

Fig. 1.1 shows the changes in the concentration of two hormones involved in the menstrual cycle.

Fig. 1.1

Fig. 1.1

[ 4 ]

Question (i)

(i)

State the names of the hormones Y and Z in Fig. 1.1.

Y
Z

[ 2 ]

Question (ii)

(ii)

On Fig. 1.1, sketch a line to show the levels of progesterone through the 28-day menstrual cycle.

[ 2 ]
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