advantage and disadvantage of viviparity

b. Birds, for instance, have never evolved live birth, possibly because the energy cost of flying while pregnant is … The offspring develops in the female and is born alive. Hundreds of millions of years ago, an ancestral mammalian lineage evolved viviparity, or live birth. However, we lack knowledge about the selective advantages of matrotrophic viviparity (live-bearing) in reptiles. Viviparity, retention and growth of the fertilized egg within the maternal body until the young animal, as a larva or newborn, is capable of independent existence.The growing embryo derives continuous nourishment from the mother, usually through a placenta or similar structure. Learn vocabulary, terms, and more with flashcards, games, and other study tools. What evolutionary advantages and disadvantages are there for oviparity and viviparity? 1. Disadvantages are that it inhibits movement and might be a bit of a pain to carry around all the time. This occurs in most mammals, some cartilaginous fish, and a few reptiles. 3. When we think in terms of marketing and strategic planning, vision statements and mission statements... What Are The Advantages And Disadvantages Of The Iterative Model? EVOLUTION OF VIVIPARITY to a variety of predators as well as microbial attack, flooding, dehydration, ultraviolet light, and tempera- A. Reconstructing the Evolution ture extremes. But why, then, are viviparous reptiles so successful in tropical climates? Oviparity (egg bearing) Advantages Reduces risk of protecting both the offspring and parent because they are separated. This occurs in most mammals, some cartilaginous fish, and a few reptiles. Internal fertilization has the advantage of protecting the fertilized egg from dehydration on land. The advantages of vivipary in Cactaceae have been poorly studied. - viviparity advantage: egg protection is easier, more well-developed offspring - viviparity disadvantage: more energy spent by mother, health of baby relies on health of mother, fewer offspring, needs parental care This process is much more energy-expensive than oviparity. There are three ways that offspring are produced following internal fertilization: oviparity, ovoviparity, and viviparity. Disadvantage (for people): should care for and they cost money. For external fertilization to occur, gametes must be released into the environment. In viviparity the young develop within the female, receiving nourishment from the mother’s blood through a placenta. Because of these and other advantages and disadvantages, viviparous animals are not the most widespread animals. The disadvantage is that it takes more energy for the mother and thus cannot produce as many young in her life. Crucially, egg-laying mothers can be physically free of their offspring sooner. In this study, we determined the vivipary incidence and its benefits in … Can increase production of eggs and chance of fertilization for external fertilization Reduces the competition… What Are The Advantages And Disadvantages Of Oviparity And Viviparity? Animals that lay eggs do not have to consume as many or as much food. They also never become awkwardly round before giving birth. The downside is that they have to incubate and guard the eggs and balance doing that with gathering food. Internal fertilization has the advantage of protecting the fertilized egg from dehydration on land. Expert Answer . They also … We all are aware of the word fertilization, which defines the union of sperm (male gamete) and egg nucleus (female gamete) to produce diploid cell or zygote, which further develops or grow into the young ones of their generation. Here’s why- Imagine you’re an egg-laying animal. This question hasn't been answered yet Ask an expert. 2. Disadvantage (for nonhuman animal): killed for humans. and viviparity in killer whales (and humans).What are the ADVANTAGES and DISADVANTAGES of viviparity? In reptiles, the interaction between body temperature and food intake affect maternal net energy gain. Limited number of offspring c. Decreased likelihood of surviving to birth d. Mothers have to produce all the nutrition required by the embryo prior to egg laying. Examples of Viviparous Humans a) ADVANTAGES - b) DISADVANTAGES - c) Briefly, why might it be that viviparity is commonly found in lizards living in cool environments (high altitude or latitude)? Most such seedlings do not plant themselves, but float away and can tolerate immersion for weeks. Viviparity has developed many different times, in response to very different environmental conditions that favored the benefits of viviparity over its downfalls. Humans, like most mammals, are viviparous animals. Humans reproduce via internal fertilization. As in all higher mammals, the egg implants in the uterine wall while it develops. What are the advantages (and disadvantages) of oviparity, ovoviparity and viviparity? Advantages. Among animals, viviparity is development of the embryo inside the body of the parent. In viviparity the young develop within the female, receiving nourishment from the mother’s blood through a placenta. Answer (1 of 1): Well it's advantages are that it like people telling you what to do like with your diet. Viviparity: viviparity comes from two latin words 'vivus' and 'parire' which mean 'living' and 'to bear young', respectively. species are the ones that can take advantage of such situations (cold and dry conditions), but the evolution of viviparity may, in reality, be unrelated to them." The offspring develops in the female and is born alive. Ovoviviparous animals have the embryos develop inside eggs that remain in the mother's body until they are ready to hatch.. The young of viviparous animals are never able to fend to themselves immediately after birth. Echinocactus platyacanthus is a viviparous endemic and endangered cactus from Mexico. 4. Viviparity. Viviparity (give birth to live young) is good because the embryo can develop inside the mother where temperatures and nutrients are stable, thus enabling the young a greater chance to survive. It helps us to organize our daily activities. Does viviparity offer any advantage to organisms? Viviparity has evolved in at least 115 lineages of squamate reptiles (lizards, snakes and amphisbaenians), and about one fifth of squamate reptiles are viviparous . Disadvantage (for nonhuman animal): if humans go extinct, they cannot survive. parthenogenesis, hermaphroditism, external fertilization, internal fertilization, viviparity, etc). Most insects produce eggs but some, such as aphids, are viviparous and give birth to live young. Viviparity means to give birth to live young rather than laying eggs. Exaptation Once viviparity has evolved for thermal reasons (presum- Both birth methods get the job done, of course, but they present contrasting advantages and difficulties. Previous question Next question A disadvantage of ovoviviparity is that fewer individuals are born and it takes more emery for … Stack Exchange Network Stack Exchange network consists of 177 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Also, if you take unsaturated fats to a Turkish Prison they will be kind to you and taste even nicer, also, if you look at a grown man with no clothes on that will be even better. For sexual reproduction, male penis insertion into the vagina of a woman is important. Given all the advantages of a shelled egg, why would a species evolve to produce young with any other method, such as live birth? Therefore, we suggest that predictably high energy availability during gestation (especially in comparison to energy availability and predictability pre-gestation) may lead to consistent advantages of placental nutrient supply. Disadvantage (for nonhuman animal): used in vivisection and bloodsports. Internal fertilization is followed by mammals, birds, while external fertilization is supported by mostly aquatic animals and few amphibians. disadvantages - low dispersal of offspring - few offspring produced - if mother dies while pregnant, offspring die, too examples: - most sharks and rays - coelacanth - rockfishes Viviparity • internal fertilization & direct maternal nourishment - ovarian fluids - placenta (some sharks) advantage - young are very large and advanced disadvantages

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