No one knows why sunflowers track the sun, but scientists suspect that it may enhance the flower’s chances for pollination, increase the amount of heat the flower absorbs or accelerate the maturation of the sunflower seeds. Sunflowers achieve their movement through the differential growth rate of the cells in the stem. When the cells on the right side of the plant grow quickly, the flower head tilts the opposite direction.Know More
In addition to their sun-tracking habits, sunflowers are famous for their large flower heads and tall stature. However, the large part at the top of a sunflower head is not a single flower. Called a flower head, this structure contains hundreds or thousands of discrete flowers. After pollination, each flower turns into a seed. The largest sunflower heads may span more than 32 inches in diameter. The tallest sunflower ever recorded grew to more than 25 feet in height.
Sunflower plants grow wild throughout North America, but farmers use cultivated varieties that differ from their wild counterparts in a number of ways. While cultivated varieties produce more seeds per flower head than the wild counterparts do, they only have one head per plant, whereas wild plants may have up to 20 heads on each plant.Learn more about Botany
Cross-pollination is the transport of pollen from a single plant to a different plant by insects or the wind. It merges the hereditary characteristics of two plants and creates more varied species.Full Answer >
Wind pollination occurs when the pollen from flowers is transported by the wind. It is also known as anemophily, and it occurs every day to pollinate crops and trees.Full Answer >
Pollination takes place when bees or other pollinators pick up the pollen from a flower's stamen and transfer it to another flower's stigma as they move from flower to flower. Pollination is not an intentional process, but it is key to the reproduction process of plants and is a crucial part of the ecosystem.Full Answer >
Pollination occurs in the stigma of a flower, which is the female reproductive part of the flower. After pollination, the seeds grow in the base of the pistil, which is called the ovule.Full Answer >