--%>

Is fecundation in amphibians internal or external

Is fecundation in amphibians internal or external? In this feature are amphibian’s evolutionarily proximal to fishes or to reptiles?

E

Expert

Verified

In the majority of amphibian species, fecundation is external. This feature is very common to bony fishes as well and it exhibits that the reproductive system and the embryonic growth of amphibians are a heritage from the osteichthyes. Curiously though having external fecundation amphibian female and male copulate to stimulate the release of sperm and egg cells. This phenomenon doesn’t characterize internal fecundation as the gametes unite in water.

   Related Questions in Biology

  • Q : External and Internal Consulting team

    Explain the term External and Internal Consulting team and what are the things that the consulting team needs to address so they will operate effectively ? Normal 0

  • Q : Factors unique to Project Managers

    Factors unique to Project Managers: A) The project manager always has to deal with the constraint of limited resources. Timelines are mostly tight. Acquiring befitting resources from functional departments and deal

  • Q : Which disease occur due to lack of

    Which disease takes place due to the lack of vitamin "D"? Answer: Rickets is the disease that takes place due to the deficiency of vitamin "D".

  • Q : Define radio immuno assay Give a brief

    Give a brief explanation of the term radio immuno assay.

  • Q : Brain region which is responsible for

    Write down the brain region which is responsible for coordination and equilibrium of body?

  • Q : Goal Management and Local Talent

    Goal Management and Local Talent Management: Minimum criteria for employees should be set from the global headquarters and that should be mandatory when selection procedure is done. After short listing the candidate on the basis of minimum criteria, t

  • Q : Description of root cap Give a brief

    Give a brief description of the term root cap?

  • Q : PH level in small intestine Coming from

    Coming from acidic pH environment of stomach which is the pH level does chyme find whenever it enters the duodenum? Why is it essential in order to maintain that paricular pH level in small intestine? Which are the organs responsible for that pH level and how is it ke

  • Q : Possible dangers-bio medicine and bio

    Write down the possible dangers which bio medicine and bio technology encounters on the advanced scientific techniques of food products?

  • Q : Characterization of birds-according to

    How the birds are characterized according to respiratory system? Answer: Similar to mammals and reptiles, they make gas exchange via lungs.