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How do Organism Reproduce:Class 10th Science Notes on Biology

Reproduction  Reproduction is defined as a biological process in which an organism gives rise to young ones (offspring) similar to itself. Reproduction at its basic level involves creation of the copy of DNA DNA...

Syllabus of CBSE class 10th examination

SYLLABUS FOR CBSE CLASS 10TH EXAMINATION Board examination is considered a very important part of everyone’s academic career. It acts as a turning point of a student career. The performance of students in board examination...

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...

NCERT Class 10th Science Biology Sample Test

BIOLOGY PRACTICE TEST   CLASS X MARKS 60        TIME 2HR Q1. (a) A Mendelian experiment consisted of breeding pea plants bearing violet flowers with pea plants bearing white flowers. What will be the result in...

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...

Structure and Interior of the Earth NCERT Notes on Geography

Interior of the Earth   The internal structure of the earth is layered. The Earth is generally divided into four major layers: the crust, mantle, inner core, and outer core. Earth’s crust is the outermost...

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...

Airways and Communication :Life Line Of National Economy .NCERT Notes in Geography

Airways The world’s first air-mail service was started in India at Allahabad; on 18th Feb 1911 on  the occasion of Kumbh mela Regular airmail services were started by Tata Sons Ltd, between Karachi and...

Sex Determination In Human Beings Explained

Sex Determination in Human Beings  A person can have a male sex or a female sex. The process by which the sex of a person is determined is called sex determination. Genetics is involved...

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...