Sexual Reproduction in Animals MaleFemale Gamete – sperm Gonad – testes Many sperm cells - spermatogenesis Sperm cells are(n) haploid/monoploid Gamete – egg Gonad – ovary Few to many eggs - oogenesis Egg cells are (n) haploid/monoploid

Sperm *Smaller *Swims through liquid *Head, middle, & tail (flagellum) Egg *Larger than a body cell *Cannot move on its own *Round shape

Fertilization ______ ______enters the ____and moves to the egg ______. The 2 nuclei ____together and then form a ______.

External Fertilization *______the body Animals that breed in the _____ Many ________in the environment –S–Sperm and egg may not _____ –E–Eggs or offspring may be _____ –M–May die due to _______conditions _________ Oxygen level

External Fertilization Large _____of sperm and egg are released to _____________hazards _______control ________to have sperm and egg released at the ____time.

Internal Fertilization *_____the ______body Land animals Some aquatic animals – _– ______ – _– _________

Internal Fertilization Requires _______sex organ to ____sperm to body of female ______environment ______for sperm to _____to the egg

Internal Fertilization After ______, ______is enclosed in a protective ______and ______OR ______and ______in ______body Zygote Turtle laying eggs

Internal Fertilization –______eggs needed –Well _________ –Increased chance of fertilization ___________– development of unfertilized egg into an adult.- Bees & Wasps

Mr. Lee’s Rap UJ5g&feature=relatedhttp:// UJ5g&feature=related

This powerpoint was kindly donated to Is home to well over a thousand powerpoints submitted by teachers. This a free site. Please visit and I hope it will help in your teaching