Which part of a plant takes in water from the soil?

• The petals
• The stem
• The roots

Which flower would make added food colouring easiest to notice in a water-transport test?

• A fresh red flower
• A fresh white flower
• An artificial white flower

Water can travel through thin tubes inside a plant's stem.

Circle one:   True   False

Priya puts a fresh white flower's cut stem in water mixed with blue food colouring. Which change would show that the dye reached its petals?

• Red patches appear without any red dye
• The petals stay white because stems block water
• Blue patches appear on some petals

A cut flower has no roots attached. Its stem stands in a cup of water. Where does water enter this flower?

• At the cut end of its stem
• At roots growing under the soil
• At petals held above the water

To show water moving from soil into a plant, draw arrows from the flowers down through the stem to the roots.

Circle one:   True   False

Ravi checks a white flower five minutes after putting its cut stem in dyed water. The petals are still white. What should he do next?

• Wait longer and check for colour again
• Decide that stems can never carry water
• Record coloured petals that he has not seen

Matching white flowers stand in red-dyed water and clear water for the same time. Only the red-water flower has red petal patches. Which statement about the clear-water flower is true?

• Only water with food colouring can move through stems
• Clear water can move without colouring petals
• Water in the clear cup cannot enter a cut flower stem