Question

understand the difference between external and
internal fertilization.​

Answer 1

Answer: INTERNAL FERTILISATION

1.Syngamy of gametes occurs inside the female body after insemination through copulation

2.Observed in birds, mammals, birds occurring in terrestrial plants and animals, also in some of the aquatic entities. This is observed in three ways 3.– ovoviviparity(eggs retained in the female body, hatched when fully developed, oviparity(egg-laying), viviparity(offsprings develop within the female body)

4.Observes in plants such as bryophytes, pteridophytes

EXTERNAL FERTILISATION

1,Syngamy of gametes outside the female body/outer environment, notably in water bodies

2,Observed in few vertebrates, sea urchins, fish, aquatic invertebrates, almost all amphibians

3,Deposition of sperms and eggs by males and females in open surroundings is known as spawning

4,Broadcast fertilization – used when sperms swim through the water uniting with eggs to fertilize

Explanation:

Answer 2

Answer:

INTERNAL FERTILISATION

fertilisation which takes place inside the body of a female is know as internal fertilisation

EXTERNAL FERTILISATION

fertilisation which takes place outside the body of a female is known as external fertilisation

hope it helps