PAGs

Question 1

Describe and explain how to investigate how plant shoots respond to light

Answer 1

1) take nine shoots that are roughly equal in height and plant them in individual pots in the same type of soil
2) next prepare the shoots as follows:
- cover the tips of three shoots with a foil cap
- leave three shoots without foil
- wrap the bases of the final three shoots with foil, leaving only the tip exposed
3) set up the shoots in front of a light source, all shoots at the same distance from the light source and experience the same light intensity. Other variable controlled (e.g. temp and exposure to moisture by growing all the shoot in the same propagator and watering them all equally)
4) leave shoots to grow for two days
5) record the amount of growth and direction of growth of shoots