Every living organism needs constant supply of oxygen to be alive (except some anaerobic organism). But each & every animal can't live without oxygen more than few minutes. Then how does embry in egg manages to live without oxygen for weeks to months.
2006-10-08 22:11:07 · 14 answers · asked by dr sachpw 3 in Science & Mathematics ➔ Zoology
embryo in eggs gets oxygen by egg shell which is soft and porous and allows diffusions of oxygen and CO2 through it.
you can also find answers in books like:
1) developmental biology by GILBERT
2006-10-09 06:59:38 · answer #1 · answered by alps 1 · 0⤊ 0⤋
You have to get things straight.Your wordings might confuse the reader.In case of humans the question of having embryo in the egg does not arise.Fertilized egg is called zygote and it continuously divides to give rise to the embryo. In the human embryo therefore the question of having egg within the embryo does not arise.The human embryo gets oxygen from the maternal blood. The oxygen is diffused out to the embryo and carbon dioxide of the embryo is diffused out to be taken by the maternal blood.
In case of hen egg, the embryo gets oxygen from the atmosphere as the shell is porous.
2006-10-09 02:14:49 · answer #2 · answered by Ishan26 7 · 0⤊ 0⤋
Embry in the egg also gets oxygen. During embryonic development , oxygen enters the egg through pores in the shell and carbon dioxide escapes in the same manner.
2006-10-09 23:39:32 · answer #3 · answered by Anonymous · 0⤊ 0⤋
The embryo is dependent on mother for everything. It gets oxygen through a wire-like organ made of skin which is connected to the the bellybutton of the mother.
2006-10-08 22:15:55 · answer #4 · answered by enigma 2 · 1⤊ 0⤋
The egg shell is actual porous. in spite of the shown fact that, no longer all living issues want oxygen. some bacteria, fungi and different basic organisms can stay in anaerobic circumstances as they are able to burn glucose in the abscence of oxygen to furnish lactic acid, which enters the Krebs cycle (fermentation)
2016-12-08 11:19:46 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Embryos in the higher animals are connected to their mothers by means of an umbilical cord which exchanges gases,food,blood,wastes,etc.
2006-10-08 22:39:15 · answer #6 · answered by Anonymous · 0⤊ 0⤋
oxygen enters the egg through the shell and carbon dioxide escapes in the same manner
2006-10-10 01:18:10 · answer #7 · answered by liam 2 · 0⤊ 0⤋
A shell is not gas impermeable. If you leave an egg out it will dehydrate giving proof that the shell allows the exchange of gases.
2006-10-08 22:15:14 · answer #8 · answered by Anonymous · 0⤊ 0⤋
embryo 1st n foremost is enclosed in an porous shell ..dis helps in d exchange of gases...dis is reagrding d eggs of animals...
where as in mamals, d embryo has amniotic fluid, yolk, allantoin..all dese provide embryo wid nutrition...exchange of gases n also act as shock absorbers.
2006-10-09 01:50:20 · answer #9 · answered by pioneer. 2 · 0⤊ 0⤋
it gets O2 from the mothers bellybutton to which the embryo is connected by some means.
2006-10-08 22:20:23 · answer #10 · answered by Anonymous · 0⤊ 0⤋