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FROG DEVELOPMENT

Published on Dec 19, 2015

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PRESENTATION OUTLINE

FROG DEVELOPMENT

BY KAI SEDIC-LAWTON
Photo by ushtey

PARENTS MATE AND THE EGGs are LAID

  • The parents mate when the male frog climbs on the female frog.
  • The male frog reaches his arms around the female frog's "waist" and that is called amplexus.
  • Amplexus can last for several days.
Photo by MoleSon²

THE EGG-MASS

  • The female lays the eggs in a big mass.
  • Some mothers leave after laying their eggs but some stay to watch their eggs.
  • The male frog fertilizes the eggs as they are being hatched.
Photo by sup3ryummy

HATCHING EGGS

  • The female lays a lot of eggs because there's a big chance that some of them will die.
  • It usually takes about 6-21 days for the eggs to hatch.
  • Most eggs are found in calm water.
Photo by Ray_from_LA

Tadpoles

  • The tadpoles start out with poorly developed gills as well as a mouth and a tail.
  • It takes about 7--10 days after hatching for the tadpoles to start swimming around and eating algae.
  • After about 4 weeks, skin starts growing over the gills of the tadpoles.

TADPOLE WITH LEGS

  • After close to 6-9 weeks, tiny legs start to develop on the tadpoles.
  • The tadpoles start to eeat dead bugs and even some plants.
  • Arms start to pop out; the elbows come out first.

YOUNG FROG

  • After 12 weeks the tail is reduced to a stub.
  • The young frogs are almost ready to reproduce.
Photo by Josh Kenzer

frog

  • It takes about 12-16 weeks for the frogs to fully grow up.
  • Frogs that live in cold places are in tadpole form throughout the Winter.
  • The frogs are finally ready to reproduce and start the lyfe-cycle over again.
  • The frogs develop lungs.
Photo by Schristia

THE END

THANKS FOR WATCHING!
Photo by atomicshark