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Why do animals that practice external fertiliztion lay m ore eggs?
Wiki User
∙ 11y ago
External fertilization means that it takes place outside of the body, which also means the eggs and sperm are exposed to a lot more danger, and that the chances of a successful fertilization are lower.
Because of this, the amounts produced are much higher to give a reasonable chance that there will be offspring.
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoThe types of creatures that lay hundreds of eggs instead of two or three at a time do so because they don't plan to be around to raise the babies, and having many hatch at one time increases the chances of their young to survive to adulthood.
Wiki User
∙ 11y agothey lay large amounts of eggs so that there is a chance of them surviving.
Wiki User
∙ 12y agoFor example for fish, frogs and corals they release many eggs to ensure survival of that particular species as the majority will not survive or not be fertilised.
Wiki User
∙ 12y agobecause the eggs develop outside of the mothers body they are more vulnerable so the mother lays more eggs to increase the chances of them surviving
Wiki User
∙ 16y agobecause their are to many eggs! x
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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.
Animals that undergo external fertilization?
Animals like reptiles (ex. snakes, turtles), birds, sharks, and mammals (ex. humans) undergo internal fertilization.Animals like some fish (ex. salmon), hydra, coral, sea urchins, amphibians (ex. frogs) undergo external fertilization.
Pictures of animals that hatched from eggs?
Picture of animals hatched from egg
What is external fertalisation?
External fertalisation is when the eggs are outside the body and the sperm is droped into them allso outside and the babys grow outside the body like fish eggs!!! If you want to see a little clippet of baby eggs watch finding nemo!!!!!!!xoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxo
What animals lay their eggs in sand?
Turtles
What adaptations in aquatic animals help ensure that external fertilization will occur?
produce more eggs
What are the only vertebrate animals that have external fertilization and lay eggs in water?
There are thousands of such vertebrates as bony fishes .
What is the difference between internal and external fertilisation in animals?
Internal fertilization is like animals having sex....the egg is fertilized on the inside. External is when the egg is fertilized on the outside (like when frogs lay eggs and they need to be fertilized before they can hatch).
Does a hawk reproduce internally or externally?
The term "external reproduction" for higher animals means in eggs rather than internally. So the hawk reproduces externally, laying and hatching its eggs.
Why do women have eggs but give live birth?
all animals have eggs, but it depends their fertilization development type (which is either internal or external). Humans are mammals, and all mammals give live birth unless it is a monotreme, which lays eggs.
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.
Are jellyfish external or internal fertilization?
External. In most cases, adults release sperm and eggs into the surrounding water, where the (unprotected) eggs are fertilized and mature into new organisms.
Is a monkeys fertilization internal or external?
Internal because they give birth and not lay eggs. If they lay eggs, they would be like a chicken. ~Savannah B.
Is penguin fertilization internal or external?
external baby penguins hatch from eggs
Do bees use internal or external development?
External, because they lay eggs.
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.
Do fish use external reproduction or internal reproduction?
The salmon reproduces externally. The female salmon will lay the eggs and then the males will shoot their semen on top of the eggs to fertilize them.
