Zoology

Body is divided into the following systems, thses are1. Integumentary system2. Digestive system3. Vitamins and minerals4. Respiratory system5. Circulatory system6. Excretory system7. Nervous system8. Sense organs9. Endocrine system10. Reproduction system11. Locomotion12. Skeleton, Joints and MusclesAll these systems are described in detail in next Chapters. All these systems carry out the body functions by which body […]

Histology deals with the study of minute structural details starting from tissue level to organ level.Different organs which are studied in histology are :Alimentary canalThis is also called digestive organ. It starts with the mouth and ends into the anus. It is composed of five basic layers.1. Seroaus membrane2. Muscular layer3. Sub-mucose4. Muscularis Nucosae5. Mucosa1.

Tissue : Group of cells having similar structure and function is called tissue. In general tissue forming cells have common origin.General Features of TissuesIn a tissue cells remain together by a non-living intercellular substance.1. Intercellular substance is jelly-like.2. The tensile strength of tissues is due to collagen fibers.3. A substance found in space is called

The cell is the basic unit of the structure of all living beings.The study concerning cell is known as cell biology.All living beings-animals and plants are composed of cells.The cells play a similar role in body building as the bricks play in the construction of a building or atoms play in the structure of matter.HistoryVan

Nomenclatures are of two types viz.(i) Binomial nomenclature and(ii) Trinomial nomenclature.Bionomial nomenclature : This classification was proposed by Linnacus (a Swedish taxonomist) in 1758. According to this classification,(a) Two names to any species were given by him.(b) First name is generic and second name is of the species.(c) This name distinguishes the animal from other

Biology is the study of living organisms. Aristotle is known as the father of biology. The term biology was coined by Lamarck and Traviranus in 1802.Branches of BiologyThere are three branches of biology namely botany, zoology and microbiology. Botany is the study of plants. Theophrastus is known as the father of botany. Zoology deals with