How Do Sunflowers Face The Sun?

The video explores the fascinating phenomenon of heliotropism in sunflowers, where they track the sun from east to west during the day. This behavior is driven by the plant's circadian rhythm and differential growth rates on either side of the stem. Research shows that sunflowers tied to prevent movement have reduced growth, and mature sunflowers face east to attract more pollinators. The video concludes with a call to action for viewers to engage with the channel.

What is the term used to describe the movement of plants towards the sun?

• Phototropism

• Circadian rhythm

• Photosynthesis

• Heliotropism

What causes the sunflower stem to bend towards the sun?

• Wind direction

• Soil nutrients

• Equal growth on both sides

• Unequal growth due to auxins

How did researchers test sunflower response to light?

• By using natural sunlight only

• By using artificial lighting conditions

• By changing soil types

• By altering water supply

Why do mature sunflowers face east?

• To prevent wilting

• To conserve energy

• To attract more pollinators

• To avoid the afternoon sun

What advantage do east-facing sunflowers have?

• They grow taller

• They attract more pollinators

• They require less water

• They produce more seeds