The advantages in external fertilization is that there are lots of egg cells produce but the disadvantages are that a small number survive because if you are using a frog, the egg cells get eaten or don't get fertilized.
Disadvantages of external equity
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.
External fertilization is used by frogs, toads and fish. They produce many eggs but not many survive.
The advantages of internal fertilization is that it protects the offspring and gives it a food source. Disadvantages would be that it takes a long time.
There has not been any huge advantage but they can produce a number of the eggs.
The 2 fertilisation's are external fertilisation, or internal fertilisation. External fertilisation is the type frogs do.
Internal reproduction:Advantages -- independent of external water medium (eg. ponds, streams etc.)- Prevent wastage of gametes and embryo- Greater chance of fertilisation- Embryo is nourished and protectedDisadvantages -- Intermittent organ must be developed- Complicated behaviour must be evolved to bring the male and femal into intimate contact
A toad goes through external fertilisation/fertilization
A koala has internal fertilisation.
they have internal fertilization
what two classes of vertebrates use external fertilisation
Seahorses use external fertilisation because they are not a mammal. Only mammals use internal fertilisation like humans.
external. how do they do it internally?
The fertilisation that takes place outside the body of an organism is called external fertilisation. Aquatic animals like hydra and coral undergoes this fertilisation.
can toad have external fertilization
internal is in and external is out fertilisation
Pigs are mammals and use internal fertilisation.
You can always upgrade more easily with an external unit.
The 2 fertilisation's are external fertilisation which the frog does, or internal fertilisation.
Lions are mammals, and use internal fertilisation.
arthropods usually have external fertilization