Heredity And Evolution : Class 10 Notes on NCERT

ACCUMULATION OF VARIATION DURING REPRODUCTION Heredity :- The process of transfer of characters or traits from the parents to their offsprings is called heredity. Variations :- The differences between the characters or traits among...

Land, Soil, Water, Natural Vegetation and Wildlife Resources:NCERT Notes Geography for Class 10th

Soil Composition Ninety percent of the world population occupies only thirty per cent of land area. The remaining seventy percent of the land is either sparsely populated or uninhabited. All the economic activities...

Mineral and Energy Resources:Conventional and Non Conventional Sources of Energy

Conservation of Minerals We are dependent on minerals for the development We are rapidly consuming mineral resources that required millions of years to be created and concentrated. Continued extraction of ores leads to increasing...

HOW TO PREPARE FOR NTSE EXAM

HOW TO PREPARE FOR NTSE EXAM National Talent Search Examination is a scholarship program organized at National level by NCERT. The main objective of the exam is to find talented students and provide them financial...

Classification of Industries

Industries can be classified on the following lines On the basis of source of raw materials used:  Agro based: cotton, woolen, jute, silk textile, rubber and sugar, tea, coffee, edible oil  Mineral based: iron and...

Water Resources: NCERT Notes For Class 10th Geography

How do we get Fresh Water The three-fourth of the earth’s surface is covered with water. But only a small proportion of it accounts for freshwater that can be put to use. This freshwater...

Heredity Evolution,Speciation Notes on Science For Class 10th

Sex determination in human beings Human beings have 23 pairs of chromosomes in the nucleus of the cell. Out of this two chromosomes are sex chromosomes X and Y. The female has two X...

Sexual Reproduction in Plants : Science Notes for Class 10 Biology

SEXUAL REPRODUCTION In a population variations are useful for survival of a population. Sexual mode of reproduction allows individuals to have more variations to be generated. Generation of variations in DNA copying mechanism of...

Sexual Reproduction in Human Beings : Study Notes for Class 10th Science

Reproduction in human beings Puberty-it is the period during which adolescents reach sexual maturity and become capable of reproduction During early teenage whole new set of changes occurs, appearance of body and proportions change...

Life Line of National Economy : Geography Notes for Class 10th NCERT

Lifelines of National Economy Goods and services are transported using three modes of transport. According to the medium , transport can be classified into land water and air transport. Means of Transport Land Roadways Railways Pipelines 2. Water Inland and...