THE HUMAN BLOOD

Blood is a red coloured liquid that circulates in our body. The main components of blood are: 1. Plasma 2. Red Blood Corpuscles (RBC) 3. White Blood Corpuscles (WBC) 4. Platelets 1. Plasma: Plasma is a colourless liquid which consists of water and many substances like proteins, digested food etc are dissolved in it. RBC, […]

INTRODUCTION TO LIFE PROCESSES

Life processes are the basic functions performed by living organisms to survive on earth. It has to be performed uninterruptedly in both active and inactive stage of organism. Some of the life processes are nutrition, respiration, transportation, excretion, control and coordination, growth etc. Every living organism needs energy for performing every life processes. NUTRITION:   Nutrition […]

DIGESTIVE SYSTEM IN HUMAN BEINGS

Human beings are heterotrophic omnivorous organisms. They obtain food from plants and animals by holozoic mode of nutrition. The human diet includes · Carbohydrates · Fats · Proteins · Vitamins · Minerals · Water The human digestive system consists of alimentary canal and digestive glands. Alimentary canal: [Digestive tract] The alimentary canal is a long […]

NUTRITION IN AMOEBA

Amoeba is a unicellular protozoan and the mode of nutrition is holozoic. It is omnivorous in nature i.e, it can take both plants and animals as food source. Amoeba feeds on unicellular plants or animals such as paramoecium. The various steps of nutrition are ingestion, digestion, assimilation and egestion. Amoeba sends out finger like pseudopodia […]

NUTRITION

The process of intake of food and its utilization by the body is called as nutrition. Depending on the mode of obtaining nutrients all the organisms, broadly classified into two groups: (1) Autotrophic                             (2) Heterotrophic AUTOTROPHIC NUTRITION: Auto – self; troph – nutrition. The mode of nutrition in which organisms prepare their own food from […]

NUTRITION

The processes which perform various functions of the body and are essential for the maintenance of life are called life processes. One of the life processes of the body is Nutrition. NUTRITION: The process of intake of food and its utilization by the body is called as nutrition. Depending on the mode of obtaining nutrients […]