What is autogamy and geitonogamy?

Answer: In unicellular creatures like the plasmodium Paramecium, autogamy, or the creation of zygotes by the divisions of a sole parent unit, is usually encountered. However, these species also have the ability to reproduce by conjugation, a process in which two individuals exchange genetic information along a cytoplasm bridge in order to cross-fertilize. Similarly, most self-pollinating species of photosynthetic organisms, the majority of which are unisexual (i.e., pansexual and female germ cells are generated by the same individual), are also susceptible of intra- and inter, and even those are obligatory self-fertilizers sometimes inadvertently do so. Since many of these species have features that encourage cross-fertilization, hermaphroditic animals—those that have both female and male genitalia are carried on one individual—rarely possess the ability to self-fertilize.