The Process of Ovoviviparity in Ovoviviparous Animals, In the case of ovoviviparous animals, the fertilization of the eggs occurs internally due to mating between the male and the female sexual organs. They are born, once the fetus matures fully over 8-9 months. Know more about our courses. It takes some time to get the baby fully grown and ready to be delivered out of the mother's body. Marine benthic invertebrates have diverse means of dispersal, and while pelagic larval dispersal by means of currents is the most common and the most rapid, especially among tropical reef species, many benthic species do not practice it. What's the final shape of the unsaved's soul? 8). An organisms mode of dispersal and the physical (environmental) means by which it is given effect are both causally linked to connectivity potential. The mode of sexual reproduction can involve internal fertilization of oocytes followed by some degree of maternal care (viviparity) or the external development of the larvae (oviparity). The advantages: Moreover, the fossil record indicates that the conquest of freshwater may not have been an isolated case. Reproductive and larval development strategies of scleractinian corals are extremely varied involving both asexual and sexual processes.81 Sexual reproduction may involve brooding after internal fertilization or mass spawning with external fertilization, but in both cases, the end products are pelagic planula larvae. Question 5. What are the advantages and disadvantages of each type? The presence of the fertilized eggs and developing young in the water provides opportunities for predation, resulting in a loss of offspring. 5.10). In the case of birds and reptiles, after laying the Eggs the mother has to incubate them for a certain period to hatch them. 2. Female cowries cover the egg mass until the larvae hatch. These species experience variable environmental conditions throughout their lifetime and are likely to show high levels of plasticity (Duputi et al., 2015). In oviparous animals, the Embryo's primary source of nutrition lies in the. In gastropods of higher phylogenetic levels, capsular development is the general rule whereby the larvae are protected and sustained within gelatinous strings or capsules at the laying site and released as swimming veligers only at a late stage of development.
