Bio Paper 1B 2023

Question 1

Diff between insect pollinated and wind pollinated

Answer 1

Insect pollinated :
- Large petal
- Coloured petals
- Sticky stigma
- Anther within flower
- Nectar

Wind pollinated :
- Small no colour petal
- Feathery stigma
- anther hang outside so pollen blows in wind
- pollen is light

Question 2

Differences between coronary vein and coronary artery?

Answer 2

Coronary vein :
- No/less oxygen
- More CO2

Coronary artery:
- More oxygen
- less CO2

Question 3

Differences between left ventricle wall and right wall ventricle wall?

Answer 3

Left Ventricle Wall:
- Much thicker wall
- More muscle
- More pressure
- pumps blood to all body