TCI U1L4

How do stems and leaves respond to light?

• By growing away from the light

• By turning towards the sunlight

• By growing underground

• By producing flowers

What stimulus do roots respond to when they grow down into the soil?

• Light

• Touch

• Gravity

• Temperature

How do roots respond to water?

• By growing away from water sources

• By growing towards water sources

• By producing flowers

• By turning towards the sunlight

Which plants are able to respond to the stimulus of touch?

• All plants

• Only flowering plants

• Some plants, especially vines

• Only plants with thorns

What do many plants stop producing during fall?

• Flowers

• Fruits

• Chlorophyll

• Seeds

How do plants respond to changing seasons?

• By growing underground

• By changing their leaf color

• By responding to changes in day length and temperature

• By producing more flowers