B. only 3% of water on earth is fresh
Answer:
option B
Explanation:
The correct answer is option B
Cells are the basic structural and functional unit of life and possess genes. These genes evolve to carry out new biological functions in the body.
Cells undergo division and growth whether it be unicellular organisms or multi cellular organisms.
All cells possess the property of compartmentalization and metabolism henceforth taking up nutritive material from the environment.
These nutrients are further transformed into the cell compartments and the waste produced as a result is expelled out thus forming on open system.
Interphase, prophase, metaphase, anaphase
Answer:
The direct conversion of mesenchymal tissue into bone is called i<u><em>ntramembranous ossification</em></u> .The process by which a cartilage intermediate is formed and replaced by bone cells is called <em>endochondral osssification.</em>
Explanation:
Intramembranous ossification is one of the two essential process during the fetal development of the gnathosome skeltal system by which rudimentary bone tissue is created. It is the process of bone development from fibrous membranes. It is involved in the formation of the flat bones of the skull, mandible and the clavicle. This type of ossification also helps in healing of bone fractures.
Endochondral Osssification: Method of forming a bone through cartilage intermediate. It is also involved in the formation of long bones.
