Why do fish and frog produce a huge number of eggs each year?
Answers
they have
different strategy than mammals and birds do when ensuring the survival of their young. This is why the number of offspring is very different when you compare fish/reptiles and mammals/birds. In order for their respective reproductive strategies to work, they have evolved to have a certain number of offspring.
Mammals and birds ensure that their young survive by nurturing them and caring for them. When you are investing copious amounts of time and energy into your offspring, it makes sense to only have a small number of progeny. This way, your resources are not spread too thin, and each of the offspring receives the care, attention, and protection it needs to have a good shot at survival.
Most fish and reptiles do not nurture or protect their young. This means that each individual offspring has a lower chance of survival, since it is left on its own from the time it hatches. To compensate for this, fish and reptiles lay a large number of eggs, so that even if a large number of the progeny die or are eaten, there will still be survivors due to the sheer number of offspring.
In short, fish lay a large number of eggs to ensure the success of the reproduction
Answer:
The fish and frog produce huge number of eggs because the mortality rate is very high.
Explanation:
The fish and frog produce a huge number of eggs each year because the life expectancy of the eggs is not very much higher. Most of the eggs get destroyed or eaten by the predator. Due to it a very few numbers of fish and frog reach up to the adult stage. In the water body there are many hazardous conditions which are threat to the eggs of frogs and fish.
To increase the chances of where next generation to reach to adult stage they produce more eggs. also the water body has the perfect condition for the nourishment of all the eggs. Provide all the necessary minerals and foods for the germination.