In biology, egg may refer to a single female reproductive cell (or gamete), which is also called an ovum (plural ova), from the Latin word for egg.However, the term also may be used as in most birds, reptiles, amphibians, fish, and insects to describe the entire reproductive body comprising a protective enclosure and the stored nutrients and developing embryo within it. A protective capsule that contains eggs, produced by certain insects, mollusks, and elasmobranch fishes. 1. ovum [o´vum] (pl. Some animals, mostly mammals, keep the zygote inside their body where the embryo grows until it is ready to be born.

A protective capsule that contains eggs, produced by certain insects, mollusks, and elasmobranch fishes. The egg is the organic vessel containing the zygote in which an embryo develops until it can survive on its own, at which point the animal hatches.

Inside the egg is the fertilized ovum that grows and develops as an embryo. o´va) (L.) the female reproductive or germ cell which after fertilization is capable of developing into a new member of the same species; called also egg. ... Full article ... Mass of egg after the reaction (grams) Observation (include any changes, like formation of bubbles ,color and shape) Percentage … See more. egg case: n. 1. Also called: blastodisc. In mammals, both fertilization and embryonic development happen inside the female. In zoology, the Latin term for egg, ovum, is frequently used to refer to the single cell, while the word egg may be applied to the entire specialized structure or capsule that consists of the ovum, its various protective membranes, and any accompanying nutritive materials. Other animals lay a protective egg outside the mother.The egg nourishes and protects the embryo. The term is sometimes applied to any stage of the fertilized germ cell during cleavage and even until hatching or birth of the new individual. A poached egg. Average clutch sizes range from one (as in condors) to about 17 (the Grey Partridge).Some birds lay eggs even when not fertilized (e.g.

Free biology and life science resources at your fingertips. Amniote Egg - Biology Encyclopedia forum « Amino Acid Amphibian » ... Amictic,egg,biological,biology dictionary,biology terminology,biology terms,biology abbreviations ... designed for grinding; produce mictic and amictic eggs. Find the definition of Albumen in the largest biology dictionary online. Bird eggs are laid by females and incubated for a time that varies according to the species; a single young hatches from each egg. The amniotic egg has specialized embryonic membranes which are not part of the embryo's body. In birds, reptiles, amphibians and invertebrates, the egg is either fertilized externally or the egg is laid before a new organism emerges. ... (Biology) a flat disc of cells formed after cleavage in a heavily yolked egg, such as a bird's egg. Definition, Synonyms, Translations of Egg (biology) by The Free Dictionary An egg results from fertilization of an egg cell.Most arthropods, vertebrates (excluding live-bearing mammals), and mollusks lay eggs, although some, such as scorpions, do not.. A clutch of eggs is the group of eggs produced by birds, amphibians, or reptiles, often at a single time, particularly those laid in a nest.. This is usually a non-motile cell. 2.

For the female reproductive cell, see Ovum.. Egg definition, the roundish reproductive body produced by the female of certain animals, as birds and most reptiles, consisting of an ovum and its envelope of albumen, jelly, membranes, egg case, or shell, according to species. Egg, in biology, the female sex cell, or gamete. The egg cell (ovum, plural: ova) is the female gamete. The layer of cells that develops on the surface of the yolk in an avian or reptilian egg and gives rise to the germinal disk from which the embryo... Blastoderm - definition of blastoderm by The Free Dictionary. In botany, the egg is sometimes called a macrogamete. See egg sac . Bird eggs. The amnion of these eggs is a fluid-filled sac surrounding the embryo inside the egg. The albumen (egg white) has solidified, but the yolk remains mostly liquid Ry Crist/CNET . This use of the term egg deals with the fertilised ovum, the zygote, and what surrounds it during its development.. Definition noun, plural: eggs (1) An organic vessel where an embryo develops, and one in which the female of an animal species lay as a means of reproduction (2) An ovum Supplement An egg is an animal reproductive body that is spherical or ellipsoidal in shape.

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