AP BIOLOGY

Detailed explanation-1: -Maize plants contain both male and female reproductive structures and reproduce by both cross-pollination and self-pollination. In most commercially viable maize genotypes, the female structure (the ear) projects outward from a central stalk, while the male structure (the tassel) projects out the top of the stalk.

Detailed explanation-2: -Jamun, banyan, apple, coconut and neem are some of the plants that reproduce by means of seeds.

Detailed explanation-3: -Okra is mainly propagated by seeds and has duration of 90-100 days.

Detailed explanation-4: -Sow the seeds one inch deep in rows that are three feet apart. The seeds generally germinate in two to 12 days. Okra will grow in many soil types, so mulch and fertilize as needed. Once the plants start to grow, thin them so they are spaced 12 to 18 inches apart.