Questions

The mammalian heartis called myogenic (myo = muscle, genie = originating from). It means the heart beat or the activities of the heart are auto regulated which originates from a muscle called nodal tissue.In the human heart,heartbeat originates and contraction is initiated by a special modified heart muscle known as sinoatrial node. It is located in the right atrium; while the QRS waves are the depolarisation of the ventricles, which initiates the ventricular contraction.The T-wave represents the repolarisation,that is, the return of the ventricles from excited tonormal state.Hepatic portal system is the unique vascular connection that exists between the digestive tract and liver. This vein carries blood from intestine to the liver.

Lord William Bentinck was the Governor-General who prohibited practice of 'Sati' in the year 1829.

Crop Rotation is the practice of growing a series of dissimilar or different types of crops in the same area in sequenced seasons. It is done so that the soil of farms is not used for only one set of nutrients. It helps in reducing soil erosion and increases soil fertility and crop yield. The British agriculturist Charles Townshend (1674–1738) popularised this revolutionary technique in the 18th century.

Karewa sediments are treasures of many human civilizations and habitations. In fact, the agriculture of the valley dominantly survives and sustains on Karewa soils. The world famous saffron from Pampore and apples from Shopian are best examples.The famous almond orchids are best grown in the soils of karewas.

The karewas are mainly devoted to the cultivation of saffron, almond, walnut, apple and orchards.Ling nuts (singharas) grow throughout the East of India: West Bengal, Jharkhand, and Bihar are examples of such regions.

Laterite soils are a tropical soil and possess a great amount of iron and aluminum. Due to its high iron oxide content they look like rusty-red coloration.