1. review emb. facts

• 1. What are some important factsabout embryology?

2. Important Facts About Embryology Taught by Mrs. Ketterer Henclucking____________ = a female chicken; makes a ______________ noiseRooster_____________ = a male chicken; crows (cock-a-doodle do)_____________________________ 3. henThe _________________ lays the eggs.A hen and rooster do not need to be together in order to produce_____________an egg. need or do not needA hen ____________ produce an egg without a rooster.cancan or cannot 4. In order for a hen to produce an egg, she must be at least ______5-6months old.24It takes about __________ hours and __________ minutes for 29an egg to form from start to finish.shellThe ___________takes the longest to form.It takes about ____ hours! 20 5. The last thing thats added to the shell before its laid is the ____________, pigmentcolorwhitewhich is the _________of the shell. Chicken eggs can be ______________,brown bluegreen peach______________, ______________, ______________, or _____________. Araucanas 6. beakChickens do not have hands, they use their _______ to explore things.teethA chicken cannot bite you because it doesnt have any ____________. 7. Fertile_______________ egg = an egg in which an embryo will growInfertile_______________ egg = the type of egg that you buy at the grocerystore; an egg in which no embryo can growIn order for a hen to lay a fertile egg, roosterthe hen must mate with a __________.Male cell joins the femalecell creating a fertile egg. 8. Embryo = the baby chicken growing and developing inside the egg__________ Chick__________= the baby chicken once it makes a hole in shell and hatches 21It takes _______ days for the embryo to grow and develop into a chick 9. Two Types of Incubation:Natural______________ incubation = a hen sits on the egg to keep it warmArtificial______________ incubation = using an incubator to keep the eggs warm 10. During natural incubation, the hen helps to provide the 4 primaryneeds of the embryo. heatThe hen provides ___________ by sitting on the eggs.The hens body temperature is very hot. Because the eggs are coolerthan the air around them, water vapor in the air starts to condense. Thishumiditycreates _________________. The hen also brings back moisture fromthe grass.exerciseThe hen provides _________________ by turning the eggs with herfeet, beak, or body about 99 times per day. unpolluted airThe embryos also need _______________________. The embryos canporesbreathe through tiny holes in the egg shell called __________. There are6,000 8,000____________ to _____________ in each egg shell! 11. The embryo has three sources of food in the egg: yolk1 - The main source of food is the ________________. It provides the embryo with vitaminsminerals fat_________________, _________________, and _________________. 12. The embryo has three sources of food in the egg:albumen2 - The __________________ is also used as a food source for the embryo. thickthin There are two layers of albumen, ________________ and _______________. Theprotein water albumen provides _________________ and ________________. 13. The embryo has three sources of food in the egg: shell calcium3 - The third source of food is the ___________ . The embryo gets ______________ bones from the shell to help build strong ______________________. 14. weakerToward the end of the 21 days, the egg shell will get ____________ becausecalciumthe embryo is using the _____________ in the egg shell for food. This willhelp the embryo to get out of the shell once it has developed into a chick. does notDuring the 21 days, the egg ______________________ grow in size. does or does not