The graph shows the relationship between temperature and the conduction velocity of nerve impulses in the giant axons of two different species of beetles: Species X (adapted to a temperate climate) and Species Y (adapted to a tropical climate).
a.[3]
Complete the sentences using the information from the graph.
Use numbers or words from this list:
15**, 25, 35, faster, slower, negative, positive, **identical
- For Species Y, between 15∘C15^\circ\text{C}15∘C and 35∘C35^\circ\text{C}35∘C, there is a ................................... correlation between temperature and conduction velocity.
- At a temperature of ................................... ∘C^\circ\text{C}∘C, the conduction velocity of nerve impulses is the same in both species of beetle.
- At 35∘C35^\circ\text{C}35∘C, the conduction velocity of nerve impulses is ................................... in Species X than in Species Y.
b.[2]
In both species of beetle, the sensory neurones from the olfactory receptors on the antennae are extremely short and connect directly to the brain. Suggest one advantage of this anatomical arrangement.