AP BIOLOGY

Detailed explanation-1: -Asteraceae is one of the largest angiosperm families consisting of several species of important flowering plants. The other name of this family is Compositae or daisy. Common examples are sunflowers, pansies, lettuce etc.

Detailed explanation-2: -Angiosperms are vascular plants. They have stems, roots, and leaves. Unlike gymnosperms such as conifers and cycads, angiosperm’s seeds are found in a flower. Angiosperm eggs are fertilized and develop into a seed in an ovary that is usually in a flower.

Detailed explanation-3: -Helianthus is a genus in the sunflower family (Asteraceae), one of the largest families angiosperms. There are roughly 70 species, both annual and perennial, with H. annuus (an annual) being the most important crop species.

Detailed explanation-4: -Angiosperms, like daisies, are more adapted to life on land because their seeds are covered by mature ovaries. This protects the seed so that it can germinate, i.e. the chance of survival of an angiosperm seed is much better than a naked gymnosperm seed.

Detailed explanation-5: -Roses, fall under the angiosperm classification since they protect their seeds within a fruit.