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cartilage
Gene combination and their expression in the embryo
Hyaline cartilage is the forerunner of long bones in the embryo.
Seeds provide nutrients and protection to a developing embryo when it is at its most fragile.
The placenta is the part of the amniotic egg that supplies food to the developing animal. The yolk provides it with food, and the albumin supplies water and nutrients.The Yolk. Yolk is a sac that is attached to the embryo that supplies food.
Most of ab baby's bones are made up of cartilage that eventually hardens into bone
Carbon Monoxide
In most of dicot seeds the endosperm is used up by the developing embryo and the food material for the seedling is stored in the cotyledons.
The egg white provides a semi liquid equivalent of the human amniotic fluid environment for the growing chick. The embryo chick starts as a tiny speck attached to the yolk. The yolk is the protein that the embryo uses to grow.
Most sources claim that the African rhinoceros has 194 bones. The horn on the head is not made of bone. It is made of the same material as fingernails.
The seed is formed in the fruit from ovule. A fertilized ovule develops the embryo and endosperm. Most of the endosperm is used up by the developing embryo in dicot seeds. In monocot seeds large amount of endosperm is retained to support the germinating embryo. When someone plants a seed in the ground an entire plant grows from it over time.
Most fish have bones. Sharks and rays do not have bones but they do have bone-like structures that are made from cartilage.