(a(i))[2]
State the gland that produces each hormone: oestrogen; testosterone.
(a(ii))[4]
Complete Table 3.1 by adding ticks (✓) in the boxes to show which hormones are involved in the development of each secondary sexual characteristic.
(b)[3]
State the letter on Fig. 3.1 that identifies the structure carrying out each of these functions: exchange of substances between the fetus and the mother; protects the fetus from mechanical shock; transfers blood between the fetus and the placenta.
(c)[4]
Outline the processes that take place during labour and birth.
(d(i))[1]
State the birthweight range in Table 3.2 that occurs most often.
(d(ii))[1]
State the number of rats that are heavier than 6.9 g at birth in Table 3.2.
(d(iii))[1]
State the kind of variation shown by the data in Table 3.2.