A mature seed consists of two essential parts – the seed coat and the embryo. Seed coat: The outer covering of the seed is known as seed coat. The seed coat develops from the integument of the ovules. The seed coat is made of two layers – the outer layer is called the testa and the inner layer is called tegmen.
The ability for an individual to survive and reproduce in its for specific environment. Any inherited characteristics that increases an organisms chance of survival. Individuals that are better suited to their environment, survive and reproduce most successfully.
Answer:
They don't have DNA common. In prokaryotic cells there is a single piece of DNA whereas in eukaryotic there are multiple chromosomes.
Catalysts lower the Activation energy for reactions. The lower the activation energy for a reaction,the faster the rate. Thus enzymes speed up reactions by lowering activation energy. Many enzymes change shape when substrate ms bind.