Month: April 2019

Chemical Coordination in Plants & Animals

Chemical Coordination in Plants: Plants do not have a nervous system but they coordinate their activities by means of some chemicals called the plant hormones or phytohormones. Depending upon the effect on plants growth, phytohormones have been grouped into the following categories-   Growth Promoters – These are the phytohormones which stimulate the growth of

Nervous System

The nervous system receives information about external & internal changes, communicates the information to different parts of the body & coordinates the activities of the different organs & organ systems. The nervous system includes the following parts- brain, spinal cord, nerves & the five sense organs namely eyes, ears, nose, tongue & skin. Brain (Encephalon):

Components of Blood

Components of Blood: Blood: Blood is an important fluid connective tissue & consists of two components – the fluid part called plasma & cells called formed elements. Formed elements are of three types – Red blood corpuscles, white blood corpuscles & blood platelets. Plasma: Plasma is a faint yellow coloured, homogenous, non-living, slightly alkaline viscous

Rivers of India

Rivers of India Important Facts: The Indus System: Indus:  also known as sindhu. Westernmost Himalayan river. Originate from a glacier near Bokhar chu in Tibet region. it enters India in the ladakh district of J&K. Mountain range – Kailash. in Tibet, Indus is known as Singi Khamban  or Lion’s mouth. Several tributaries like the Zaskar,

Digestion Process in human beings

Digestion Process: The process of digestion involves intake of the food (Ingestion), breakdown of the food into micromolecules (Digestion), absorption of these molecules into the blood stream (Absorption), the absorbed substances becoming components of cells (Assimilation) and elimination of the undigested substances (Egestion). Digestive system includes the alimentary canal and associated digestive glands. Alimentary Canal

Gupta Empire

Gupta Empire Important Facts: The founder of the Gupta dynasty was Sri Gupta. He was succeeded by Ghatokacha. These two were called Maharajas. Chandragupta I (320-330 A.D.): Chandragupta I was the first independent Gupta empire ruler & called himself ‘Maharajadhiraja‘ (the great king of kings). Married the Lichchavi Princess, Kumaradevi, which was politically very strategic

Sangam Age

Sangam Age Important Facts: The land South of Krishna River was divided into three kingdoms – Cheras, Cholas & Pandyas. There was continuous warfare between the three. Sangam Age Kingdom: Cheras: Emblem – Bow & Arrow. Capital – Vanji or Karur (modern Kerala). Port – Muzris (most famous), Tondi, Bandar. The cheras dynasty was known

Pre-Gupta Period

Pre-Gupta Period Important Facts: Indo-Greeks: Demetrius was the first foreign king after Alexander who carried Greek army into India about 190 B.C. & conquered North Western part of the Mauryan Empire. Most famous among Indo-Greek rulers was Menander who reached Pataliputra. His capital was Sakala or Sialkot. He was converted to Buddhism by Nagasena or

Mauryan Empire

Mauryan Empire Important Facts: Chandragupta Maurya (321-297 B.C.): Called as Sandrocottus by the Greeks. Finding signs of royalty in him, Chanakya or Vishnu Gupta or Kautilya, brought him up got him educated at Taxila. At the young age of 25, dethroned the last Nanda ruler (Dhanananda) & occupied Pataliputra in 321 B.C. with the help