(a(i))[2]
State two features that make amphibians different from every other vertebrate group.
(a(ii))[2]
Identify the structures marked G and H on Fig. 3.1.
(b(i))[3]
Identify the cell structures K, L and M on Fig. 3.2.
(b(ii))[1]
State the names of the 2 parts that make up the mammalian central nervous system.
(c(i))[2]
On Fig. 3.3, place the letter P to indicate the fovea and the letter Q to indicate the blind spot.
(c(ii))[5]
Describe and explain how the rod cells and cone cells are distributed in Fig. 3.3.
(c(iii))[2]
Suggest how the number and spread of rod cells and cone cells across the retina of a nocturnal mammal would differ from those in a human retina.