avian egg structure

Question 1

how long is a chickens incubation period

Answer 1

21 days

Question 2

how long is a pheasants incubation period

Answer 2

23-24 days

Question 3

how long is a ducks incubation period

Answer 3

28 days

Question 4

how long is a barn owls incubation period

Answer 4

31 days

Question 5

what is egg shell made of

Answer 5

calcium carbonate

Question 6

why is egg shell semi-permeable

Answer 6

to allow for gas exchange

Question 7

what does egg shell prevent from entering the shell

Answer 7

unwanted toxins

Question 8

what is the function of the yolk

Answer 8

provides nutrients and food to the forming embryo

Question 9

function of the albumen

Answer 9

contains a variety of proteins

Question 10

function of the chalaza

Answer 10

spiral strands that hold the egg yolk in the egg white

Question 11

where is the air cell located

Answer 11

between the shell membranes

Question 12

other name for albumen

Answer 12

egg white

Question 13

what are the inner and outer membranes made of

Answer 13

proteins

Question 14

what does the inner and outer membranes sit between

Answer 14

the shell and the albumen

Question 15

function of the inner and outer membranes

Answer 15

defence barrier against bacteria

Question 16

function of the amnion

Answer 16

forms a sac which helps to protect the embryo and helps the amniotic fluid which acts as a shock absorber

Question 17

function of the allantois

Answer 17

develops a large circulatory system which allows for respiratory, excretory and digestive functions

Question 18

function of the yolk sac

Answer 18

used as a food source for the embryo, but is also used by the chick once hatched

Question 19

function of the chorion

Answer 19

surrounds the embryo and allows for gas exchange