CBSE Class Notes Online – Classnotes123
CBSE Class Notes and Question Answers Online – Classnotes123
What is heterotrophic nutrition? It is the mode of nutrition in which an organism cannot make its own food from simple organic materials and depends on other organisms for its …
Read More
Photosynthesis is the process by which green plants synthesize organic food as carbohydrates in the presence of sunlight, chlorophyll water, CO2 and some other raw materials. Oxygen is released in …
Read More
Mode of Nutrition in Paramecium Paramecium is a tiny unicellular animal. It feeds on microorganisms like bacteria, algae and yeasts. Like amoeba, paramecium also exhibits holozoic nutrition which is a …
Read More
Digestive glands are the glands which have ducts that secrete digestive substances necessary for digestion in the digestive tract. For example salivary glands, liver , pancreas Various glands associated with …
Read More
Exchange of gases in plants The energy produced in plants by respiration is utilized in growth and life functions. The respiration in plants involves the exchange of Oxygen and carbon …
Read More
The transport system of human beings is also called the circulatory system. It consists of Blood vascular system and Lymphatic system. The Blood Vascular System has three components 1.The Heart- …
Read More
Human respiratory system Respiratory system in human beings serves to provide fresh oxygen to all body cells and remove harmful carbon dioxide from the body. The well labelled diagram …
Read More
Breathing Definition Breathing is the process by which air rich in oxygen is taken inside the body of human being and air rich in carbon dioxide is expelled from the …
Read More
What are salivary glands? The salivary glands are located in front of the ears, under the chin in the floor of the mouth and throughout the palate, mouth and pharynx. …
Read More
Digestion is the process in which complex and large components of food are broken down into their respective simpler and smaller forms with the help of various types of digestive …
Read More