Question

Why external fertilization is disadvantage to animals when compared to internal fertilisation

Answer 1

Answer:

yes in external fertilization the fusion of male and female gamete is very difficult and survival of zygote from other animals is also very rare chance

Answer 2

External fertilisation is a disadvantage to animals when compared to internal fertilisation because :-

• It occurs in aquatic medium
• A chance factor is involved because synchronous release of gametes and proper turbulence of water are not sure to occur in the perfect time.
• There's no protection for the offsprings.