Reproduction is a biological process by which living organisms produce more individuals of their own kind. There are two modes of plant reproduction: asexual reproduction and sexual reproduction.Sexual reproduction in plants consists of alternating, multicellular haploid and diploid generations. In angiosperms, the female gametophyte is the embryo sac and the male gametophyte is the pollen.exual Reproduction. Reproduction is a biological process by which living organisms produce more individuals of their own kind. There are two modes of plant reproduction: asexual reproduction and sexual reproduction. Sexual reproduction in plants consists of alternating, multicellular haploid and diploid generations.
History >> Ancient Greece. The Peloponnesian War was fought between the Greek city-states of Athens and Sparta. It lasted from 431 BC to 404 BC. Athens ended up losing the war, bringing an end to the golden age of Ancient Greece.
Athens and Sparta were two very different city-states in ancient Greece. Their differences sometimes led to a distrust of each other. But between 499 and 479 B.C.E., these city-states had a common enemyâthe Persian Empire. At that time, Persia was the largest empire the world had ever seen. Its powerful kings ruled over lands in Africa, the Middle East, and Asia. During the 400s B.C.E., the Persians invaded Greece, and the Persian wars began. To fight the Persians, the Greek city-states eventually joined together as allies. Allies are states that agree to help each other against a common enemy. Compared with Persia, these tiny Greek city-states had much less land and far fewer people. How could they possibly turn back such a powerful invader? In this chapter, you will learn about important battles during the Persian wars and discover who won them. You will also learn about the factors that influenced the outcome of the Persian wars. 28.2 â The Persian Empire and the Ionian Revolt