Human Digestive System

 The digestive system in human beings is made of alimentary canal and some external glands like liver, pancreas and salivary glands which help in digestion of food. The alimentary canal is a long tube having a length of 8-10 meters. The various organs of human...

Nutrition in Grasshopper

Grasshopper (or cockroach) is a multicellular organism. So, in grasshopper (or cockroach) the different processes of nutrition takes place in fully developed digestive system. The digestive system is a system of organs and glands concerned with obtaining, digesting...

Nutrition in Amoeba

 Amoeba is an important protozoa found in fresh water. It feeds on microscopic plants and animals present in water. The mode of nutrition in amoeba is Holozoic. And the process of obtaining food by amoeba is called phagocytosis. The different processes involved in the...

Mechanism of Photosynthesis

  The process of photosynthesis can be divided into two main phases: Light reaction (or light dependent reaction) Dark reaction (or light independent reaction) Light reaction It occurs in the grana present in chloroplast. During light reaction, chlorophyll absorbs...

Chloroplasts

Site of photosynthesis The main sites of photosynthesis in a plant leaf are small cell organelles called chloroplasts or plastids. Chloroplast is basically a sac like structure containing chlorophyll pigment. Chloroplast can be seen just below the upper epidermis in a...

Factors Affecting Rate of Photosynthesis

 The process of photosynthesis is affected by two types of factors namely: Internal factors Chlorophyll Leaf anatomy Accumulation of end products and Hormones External factors Carbon dioxide Water Sunlight Oxygen and Temperature Internal factors 1. Chlorophyll The...