Why do frogs produce hundreds of eggs and humans produce one?

Answer 1

Because fish and frogs have a very small percentage of the eggs grow up to be mature adults, so the more they have the more chance for their to be fully mature adults, whereas chickens have a higher probability of surviving to adulthood.

Answer 2

Frogs are much more active and efficient parents than sea urchins are. Frogs are able to protect and care for eggs until they hatch, whereas sea urchins cannot. Therefore, sea urchins need to produce more eggs to account for higher mortality.

Answer 3

Animals subject to predation tend to produce high numbers of offspring to offset the losses. These animals tend also to produce offspring frequently and spend little or no time caring for them.

Animals that produce fewer offspring tend to take more care and spend more time parenting their children. Their children need less looking after as their journey into adulthood is very rapid.

Humans have a long gestative period, they care for their offspring for a a very long period of time as the offspring change from a child. The child needs this time to develop mentally. Humans also have very few predators.

Therefore with these conditions it is unnecessary for nature to provide us with a shotgun effect to reproduction. It is better for our species to invest a lot of time in few offspring rather than many.
Because such a high percentage of them die out before adulthood- 98% in fact!

• Their mode of fertilization is external.
• They lay eggs in the water and there is a chance of destruction of these gametes by water current if they are in less quantity.
• So they lay more and more eggs in order to rule out the possibility of destruction of all eggs.
• Thus at least some eggs are fertilized by sperm and produce zygote.

because they lick eachothers bumhole

• By producing lots of eggs, there is a better chance of the species surviving. Only one in five eggs matures into a frog, so frogs produce hundreds of eggs so there will be mature frogs to breed and ensure the continuation of the species.

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Because hardly any survive, so they lay loads that at least some survive!
Natures defence for survival in the frog life cycle initiates frogs to spawn large number of eggs on water surface as they become exposed to many predators till they reach adult frog stage by which times many are killed.
because most of the taddies don't survive.

• By producing lots of eggs, there is a better chance of the species surviving. Only one in five eggs matures into a frog, so frogs produce hundreds of eggs so there will be mature frogs to breed and ensure the continuation of the species.

Because their organs are more delicate
because their organs are much more delicate...

Answer 4

There are two basic strategies to reproduction that can allow some offspring to survive. One is for an animal to have many, many babies, but not to take much or any care of them. The babies have to fend for themselves, but there are so many that a few are bound to survive and continue the life cycle. That is the frog's strategy. The other strategy is to have only a few offspring, but to take very excellent care of those offspring so each one has a much higher chance to survive and continue the lifecycle. That is the strategy mammals use.

Answer 5

The number of eggs that a species lays depends on how many are expected to survive to adulthood. There are many more predators for fish eggs than for hen eggs.

Answer 6

Because frogs eggs are released into the environment (where predators will eat most of them) while human are developed internally (where they are safe).