(a(i))[1]
State the tissue name of X.
(a(ii))[1]
State the name of the nerve that carries impulses from the eye to the brain.
(a(iii))[1]
State what occurs to rays of light as they enter the cornea and the lens.
(a(iv))[2]
Describe the function played by rod cells.
(b(i))[1]
State the stimulus that caused the plant’s response.
(b(ii))[2]
Name the growth response exhibited by the plant.
(b(iii))[2]
Explain the benefit to plants of the growth response shown in Fig. 2.2.
(b(iv))[4]
Explain how auxins control the growth response shown by A. thaliana in Fig. 2.2.