what are the two types of fertilization?compare and contrast them.
Answers
What Is Internal Fertilization?
Syngamy of gametes occurs inside the female body after insemination through copulation
Observed in birds, mammals, birds occurring in terrestrial plants and animals, also in some of the aquatic entities. This is observed in three ways – ovoviviparity(eggs retained in the female body, hatched when fully developed, oviparity(egg-laying), viviparity(offsprings develop within the female body)
Observes in plants such as bryophytes, pteridophytes
What Is External Fertilization?
Syngamy of gametes outside the female body/outer environment, notably in water bodies
Observed in few vertebrates, sea urchins, fish, aquatic invertebrates, almost all amphibians
Deposition of sperms and eggs by males and females in open surroundings is known as spawning
Broadcast fertilization – used when sperms swim through the water uniting with eggs to fertilize
The two types of fertilization are:
> Internal Fertilization
> External Fertilization
> External Fertilization:
When fertilization takes place outside the body of a female it is called External Fertilization.
Eg) Fish, Frog etc.
> Internal Fertilization :
When fertilization takes place inside the body of a female it is called internal fertilization.
Eg) Human Being, Hen, Cow etc.