معلومات قصير موضوع انجليزي بحث تقرير بالانجليزي باللغة
الانجليزية انشاء
موضوع عن الحيوانات الاليفة وانواعها
اين تعيش ماذا ياكل مدة حياتها اسماء صغارها
تعبير عن الجمل بالانجليزي تعبير كتابي عن وصف حيوان
اليف عبارات قصيره للاطفال
information about
paragraph معنى
برزنتيشن معلومات بسيطه اسم
نطق كلمة معنى كلمة برجراف حيوان مفترس لاحم عاشب اليف متوحش وحيش الغابة
موسوعة عالم الحيوانات برمائي كل شيئ عن تزاوج انواع الانجليزي الشائعة معنى كلمة بالانجليزي اختصارات
معلومات عن الحيوانات بالانجليزي موضوع عن الحيوانات
الاليفة بالانجليزي دورة حياتها
تغذية الحيوانات والحشرات على ماذا تتغذى كيف تتغذى
الموسوعة تتذوق الطعام تصنيف
فوائد الجنس للصف الرابع للصف السابع الاول الثاني
الثالث الخامس السادس الثامن التاسع كتابة
ذكر اضرار معلومات طائر انواع تربية قصة صفات حديقة الحيوانات مقدمة خاتمة
عرض المزرعة لرياض الأطفال براعم لائحة اسماء الحيوانات العاشبة اللاحمة حيوانات
تاكل النباتات مختلطة التغذية تتغذى الغريزة الحيوانية الكائنات
المخلوقات الحياة البرية
The egg is the means that many animal species,
mainly oviparous and ovoviviparous animals, use as a means to carry out their
reproduction.
The fertilized egg will hatch after a lapse of
time, determined by the species of animal that laid it, to produce a young
individual similar to the parents.
Birds are naturally animals that we know well that
lay eggs, but reptiles, fish, insects ... well, almost all animals except
mammals lay eggs. The platypus is the only exception.
The egg is actually an envelope, often made of a
rigid limestone shell, like chicken eggs. But it can be semi-rigid or even
soft, as for reptiles.
It is composed of a protective shell that bathes in
the white, made of albumin, and the yellow that serves as food throughout its
evolution until hatching.
Depending on the species, as for birds, the egg
must be incubated and kept warm throughout its development. This is why the female,
or both parents, will sit on the nest and hatch to keep the eggs at the right
temperature.
Photo of a broken bird egg
As the embryo develops, it uses the liquids
contained in the egg until it is ready for hatching. At this moment, the little
one will pierce the shell of the egg to get out, usually completely formed, but
immature.
Some animals, like turtles, lay their eggs in the
ground, bury them, and then leave. The eggs are placed at a place that will
have the right temperature, and they develop just like other oviparous animals,
except that they are not protected by the parents.
In insects, the egg is the first stage of several
metamorphoses that will produce the adult insect. Once mature, the egg gives a
larva that will continue to develop into a nymph ... and finally into an
insect.
Photograph of insect eggs
Ovoviviparous animals produce eggs that develop on
their own, but they are not laid to grow outside the parent's body. Seahorses
are one example where the female lays the eggs and gives them to the male who
will wear them and protect them for the time they hatch.
Eggs are very important for today's food and
cooking. Those who are consumed are not fertilized, and are used exclusively
for our consumption. The hen lays constantly until she has eggs to hatch, and
one only has to take them to produce others.
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