0
Why do animals undergoing external fertilization lay large number of eggs and sperms?
Wiki User
∙ 7y ago
The eggs are not limited by the space inside the mother's body as they grow. Also fewer of the eggs will grow into adults, so more eggs are needed (otherwise, that species would have become extinct)
Wiki User
∙ 7y ago
Add your answer:
Earn +20 pts
What are the some disadvantages of external fertilization?
It depends. Are you talking about humans? 8D Humans use internal fertilization but the disadvantages in external fertilization is that a small number of eggs survive.
Why internal fertilization often produces fewer offspring than external fertilization?
Internal fertilization utilizes a placenta and womb and this limits the number of offspring that can be produced. Internal fertilization also has a higher birthrate than external fertilization.
What type of fertilization requires A great excess of a sperm gametes because most are wasted?
Broadcast fertilization requires a great excess of egg and sperm gametes because most are wasted. Aquatic animals, such as starfish and sea urchin, mate in this manner.
What are the 2 types of fertilizers?
Internal fertilization and external fertilizationinternal means When the fusion of the male and female gamete occurs within the female genital tract it is called internal fertilization. This type of fertilization occurs in all terrestrial animals both oviparous and viviparous. Reptiles, Birds and mammals show internal fertilization external fertilizationThe fusiri of the gametes occurs outside the body of the animal and is common in aquatic animals. In bony fishes, frogs, echinoderms the sperms and ova are released into the water and their union occurs by Chromosome number of few chance. Since fertilization occurs outside the body of the animal externally, this method is called external fertilization.
Why does organisms that use internal fertilization produces less offspring than the ones that use external fertilization?
Because internal fertilization requires a womb and placenta to protect and nourish the growing embryos - which limits the number of offspring the mother can produce. Laying eggs outside the body means the female can potentially produce many more off-spring, and thus vastly increase the chances of the species survival.
What are some environments in which external fertilization can occur?
Water would be the number one choice.
Is number of eggs prodced by oviparous and young ones produced by viviparous same?
oviparous animals live in more harsh environment and thus lay large number of eggs compared to viviparous animals. this high multiplication ensures that few of the eggs get fertilized (external fertilization) and develop into young once.
How does the number of eggs relate to the type of fertilization?
Usually, it doesn't. The only thing that would be different is that internal fertilization, there is less eggs because they are protected in the mother's body. The external fertilization, there is more eggs because of the lesser chance of survival
Why animals that reproduce by external fertilization produce more eggs then animals that are internal?
Vertebrates that use internal fertilization tend to produce fewer eggs because almost all of their eggs are fertilized. With animals that use external fertilization, a number of eggs are never fertilized. With some animals like oysters, the males release a tremendous amount of sperm and the females release a tremendous number of eggs, but it is hit or miss if n egg will be fertilized as it floats along. A woman only needs to produce one egg to get pregnant. She can look after that baby for a few years before she gets pregnant again. just as many oysters as children are likely to survive to adulthood.
What are the advantages of internal fertilization?
internal fertilization is, by definition advantageous because it is natural. In Vitro fertilization is advantageous for those who cannot have children naturally because it allows the miracle of birth to occur.
What are the types of fertilizers?
Internal fertilization and external fertilizationinternal means When the fusion of the male and female gamete occurs within the female genital tract it is called internal fertilization. This type of fertilization occurs in all terrestrial animals both oviparous and viviparous. Reptiles, Birds and mammals show internal fertilization external fertilizationThe fusiri of the gametes occurs outside the body of the animal and is common in aquatic animals. In bony fishes, frogs, echinoderms the sperms and ova are released into the water and their union occurs by Chromosome number of few chance. Since fertilization occurs outside the body of the animal externally, this method is called external fertilization.
Do frogs have external or internal fertilization?
The frogs have external fertilisation. The male gamete (sperm ) & female gamete (ovum ) is released outside the body of female. Gametes are released in large number to assure the fertilisation of at least few eggs.A Frog does it externally
