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How are birds adapted for reproduction? A close look at the chicken egg

How are birds adapted for reproduction? A close look at the chicken egg. Birds. What you know: Fertilization occurs … INTERNALLY Development occurs … EXTERNALLY (outside of mother’s body) The avian egg contains everything that the developing embryo needs FOOD = Yolk

allistair-emerson
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How are birds adapted for reproduction? A close look at the chicken egg

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  1. How are birds adapted for reproduction? A close look at the chicken egg

  2. Birds What you know: • Fertilization occurs … INTERNALLY • Development occurs … EXTERNALLY (outside of mother’s body) The avian egg contains everything that the developing embryo needs FOOD = Yolk OXYGEN = Shell Pores PROTECTION = Shell and Amniotic Fluid

  3. Hen x Rooster ↓ Fertilized Egg (embryo) Hen x no Rooster ↓ Unfertilized Egg ($2.19/dozen) Position of Ovary in A Hen Chicken Reproduction

  4. Ovary produces Ovum surrounded by Yolk ↓ Infundibulum (catches yolk) ↓ Oviduct ↓ Uterus ↓ Vagina ↓ Vent ↓ Ovum with Shell (24 hours after yolk released) Egg Formation

  5. The Incredible Edible Egg

  6. The Fertilized Egg

  7. On Day 21…

  8. And Now… • Watch Film • Take Notes • Answer Questions Tomorrow…DISSECTION!!

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