Sunflower Life Cycle and Growth

The video explains the life cycle of a sunflower, starting from planting the seed, through germination, seedling development, and growth into a mature plant with a flower. It covers the process of photosynthesis, the formation of a flower bud, blooming, pollination, and seed formation. Finally, it describes how the seeds can be harvested to grow new sunflowers, completing the cycle.

What are the initial conditions required for a sunflower seed to start germinating?

• Darkness, dryness, and heat

• Water, sunlight, and warmth

• Wind, rain, and snow

• Fertilizer, shade, and cold

During germination, what part of the sunflower seed grows downward?

• The roots

• The leaves

• The shoot

• The stem

What process do the first leaves of a sunflower seedling use to make food?

• Respiration

• Photosynthesis

• Transpiration

• Fermentation

Why does a sunflower plant need a strong stem?

• To absorb more sunlight

• To support the large flower

• To store water

• To attract pollinators

What is the role of florets in a sunflower?

• To attract sunlight

• To produce seeds

• To repel insects

• To store water

Which creatures help in the pollination of sunflowers?

• Ants and beetles

• Frogs and lizards

• Bees and butterflies

• Birds and bats

What happens to the sunflower petals after pollination?

• They begin to wilt

• They produce nectar

• They grow larger

• They change color

What is the final stage of the sunflower's life cycle?

• Flower blooming

• Leaf development

• Seed harvesting

• Seed germination