CHAPTER VII
ADAPTATIONS FOR THE PRESERVATION OF THE SPECIES
A. Methods of Reproduction
1. The Simple or Asexual Method of Reproduction
Materials.
Slides or diagrams, showing a dividing amœba, a dividing paramecium, a dividing vorticella, reproduction in some form of sporozoa, budding hydra, gemmules of spongilla, and some species of worm as Dero or Nereis in the process of dividing.
Definitions.
Spore, a cell capable of developing into a new organism. Asexual reproduction, reproduction by division of the cell or body. Sexual reproduction, reproduction by means of the conjugation of two reproductive cells known as the egg and sperm cells. Fertilization, the fusion of the male or sperm cell with the egg or female cell. Ovary, an organ producing eggs. Spermary, an organ producing sperm cells. Cross fertilization, fertilization in which the sperm and egg cells are produced by different individuals. Diœcious, the different kinds of reproductive organs found in different individuals. Monœcious, the different kinds of reproductive organs found in the same individual.