THE SUNFLOWERThe sunflowers are annual plant in the family Asteraceae. They have large flower heads (capitulum). The stem can grow up to 3 meters tall, with a flower head that can be 30 cm wide. Other types of sunflowers include the California Royal Sunflower, which has a burgundy (red + purple) flower head.

The flower head is actually made of hundreds or thousands of tiny flowers called florets. The central florets look like the center of a normal flower, and the outer florets look like yellow petals. All together they make up a "false flower" or pseudanthium. The benefit to the plant is that it is very easily seen by the insects and birds which pollinate it, and it produces thousands of seeds.

The sunflower is the state flower of Kansas. That is why Kansas is sometimes called the Sunflower State. To grow well, sunflowers need full sun. They grow best in fertile, wet, well-drained soil with a lot of mulch. In commercial planting, seeds are planted 45 cm (1.5 ft) apart and 2.5 cm (1 in) deep.
6.the family of sunflowers. F. pseudanthium
7.the height of sunflowers.G.Kansas
8.the diameter of sunflower's head. H. 30
9.the place where sunflowers become the state plants.i.3 meters
10.the term refers to the false flower in sunflowers. j. Asteraceae​