Arthropods reproduce by transferring sperm from the male to a female by way of sealed packets called spermatophores, according to the Encyclopedia Britannica. With few exceptions, arthropods are sexed as male or female, and both sexes have gonads, or sex organs, directly connected to ducts on the ventral surface of their trunks. The exact location of these ducts varies considerably amongst arthropod species.Know More
During reproduction, sperm is not diluted with any other medium, according to Encyclopedia Britannica. In most arthropods, the spermatophore is left on the ground once reproduction occurs. After a nuptial dance, the male assists the female in positioning herself over the spermatophore to take it into the genital opening.
Fertilization in most arthropods results in the female laying eggs. In some arthropods, such as the scorpion, the eggs hatch inside the mother. She gives birth to live young and cares for her babies for an extended period, according to Wikipedia. Arthropods are all born at different stages of development ranging from fully formed miniature adults to grubs or caterpillars. When arthropods are born as grubs or caterpillars, they undergo metamorphosis, a period of inactivity where larval tissues are broken down and re-used to help build the adult body.Learn more about Animal Reproduction
Direct development is when the newborn offspring of a species is similar in most regards to the adult, according to Encyclopedia Britannica. The newborn is born or emerges from its egg as a miniature version of the adult. It looks like the adults of its species, and it also feeds like an adult of its species. The newborn differs from the adult only in minor details, especially size.Full Answer >
Disadvantages of external fertilization include a reliance on water and the large amount of wasted sperm and eggs that never reach a corresponding gamete, even when the organisms releasing the eggs and sperm are in close proximity. Additionally, the eggs released can have no shells, as these would stop sperm.Full Answer >
Roundworms reproduce sexually. The female roundworm has an ovary, and she holds eggs in her oviduct until she passes them into her uterus, where they are fertilized by the male. The male produces sperm cells in his testis and stores them in his vas deferens until it is time to reproduce; then he passes them through a spicule to fertilize the female's eggs.Full Answer >
Monkeys reproduce by engaging in a sexual act between a mature male and female. Most species are able to reproduce once they reach the age of 4 years old. It is quite common for male monkeys to fight in order to become the alpha or leader of the group, since that accords them the right to mate with the females in the group.Full Answer >