(a)[1]
State one feature visible in Fig. 5.1 that could show the koala is a mammal.
(b)[3]
Mammals reproduce sexually to produce offspring. Discuss the advantages of sexual reproduction in organisms such as the koala.
(c)[4]
Complete Table 5.1 by entering the letters that label the structures in Fig. 5.2, the structure names and their functions.
(d(i))[4]
Describe the function of the placenta in humans.
(d(ii))[2]
State two functions of the amniotic fluid present in the amniotic sac.