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In external fertilisation not all eggs are fertilised why not?
Because - external fertilisation is 'left to chance'. There's no guarantee that every egg laid will be fertilised by sperm. Internal fertilisation is much more successful.
What animal group has internal fertilisation but external development?
Reptiles and birds are among the major groups of vertebrates that have internal fertilization and external development. Also included are monotremes and marsupials.
Are whales reproduction internal or external?
Marine mammals have internalized genitalia for streamlining.
List of animals that have external fertilisation?
Some animals that have external fertilization include fish, frogs, sea urchins, and certain aquatic invertebrates like jellyfish and corals.
Are sparrows external or internal fertilisation?
Sparrows exhibit internal fertilization, where the sperm fertilizes the egg inside the female's body. The male bird transfers sperm to the female through copulation.
What two classes of vertebrate use external fertilisation?
what two classes of vertebrates use external fertilisation
Which animals use external fertilisation?
spiders
Mosquito have internal fertilisation or external fertilisation?
external
What are the 2 kinds of fertilization?
The 2 fertilisation's are external fertilisation, or internal fertilisation. External fertilisation is the type frogs do.
Do frogs use external fertilisation examples?
Yes
Do ants use internal or external fertilisation?
Yes.
If you use external fertilisation do you lay eggs?
yes,sometimes
What are the differences between internal fertilization and external fertilization?
Internal fertilization is where the egg is fertilized inside the body(such as humans) and external fertilaztion is where the an egg is laid and then fertilized. Such as in fishes!
What animals go through external fertilisation?
A toad goes through external fertilisation/fertilization
What is type of fertilisation?
There are broadly 2 types of fertilisation - 1) Internal fertilisation - This mostly takes place in higher classes of animals like humans and mammals. In this the male transfers its gametes into the female body and the male gamete fuses with the female gamete inside the female body 2) External fertilisation - This is mostly seen in fishes. The male and the female both transfer their gametes into the external environment and the gametes fuse outside
Does a chicken carry out external fertilisation or internal fertilisation?
internal
Where do eggs and sperm meet in external fertilisation and internal fertilisation?
Yes
