Fill in the blanks and rewrite the statements: Heredity and Evolution One Mark questions answers (1) Johann Gregor Mendel is pioneer of the modern genetics. (2) Heredity is the transfer of biological characters from one generation to another via genes. (3) Each mRNA is made up of thousands of triplet codons . (4) Vertebrates have … Read more
Dear students, sharing with you Science Quiz. This quiz will help you for preparing for your exams
Can you recall? (Textbook page no. 30) 1. What are the types of molecules of elements and compounds? The molecules of an element are made of one or more atoms that are exactly alike whereas, the molecules of compound are made up of atoms of different types. 2. What is meant by valency of elements? … Read more
PERIODIC CLASSIFICATION OF ELEMENTS NOTES Basic concepts – Matter – It is anything around us which has mass and which occupy space States of matter: – Solid Liquid Gas Plasma state (Occurs at extremely high temperature – 11,000° – 14,500° Fahrenheit or 150 million degrees Celsius) Bose Einstein condensates (temperatures very close to absolute zero … Read more
HEREDITY AND EVOLUTION EXERCISE QUESTIONS Q.2 Read the following statements and justify a) Human evolution began approximately 7 crore years ago. The last dinosaurs disappeared approximately 7 crore year ago due to changes in environmental conditions. Monkey like animals evolved from lemur – like ancestors 4 crore years ago – The tail of these … Read more
Life Processes 1 Test. Dear students, sharing with you Life Processes 1 Test. This will help you for preparing for board exam. Q.1. (A) Choose and write the correct option: (5 Marks) Water content of Blood Plasma is ……………… . 70% 90% 65% 50% In which part of cell, electron transfer chain reaction occurs? Cytoplasm … Read more
HREDITY AND EVOLUTION TEST ANSWERS This will help you to prepare for your board exam. Q1. A Rewrite the statement by using correct option. ……. proposed a model for protein synthesis with the help of DNA in bacterial cells. Johann Gregor Mendel Walter and Sutton Francois Jacob and Jack Monad Hugo de Vries Information about … Read more
Gravitation Test Answers Total marks – 40 Time – 2 Hrs. Q 1 (A) Choose the correct alternatives (5 marks) Gravitation Test Answers If the distance between two objects increases 5 times, the gravitational force becomes times. (a) 5 (b) 15 (c) 1/25 (d) 25 The gravitational force on the surface of the … Read more
GRAVITATION TEST Total marks – 40 Time – 2 Hrs. Q 1 (A) Choose the correct alternatives ( 5 marks) GRAVITATION TEST If the distance between two objects increases 5 times, the gravitational force becomes times. (a) 5 (b) 15 (c) 1/25 (d) 25 The gravitational force on the surface of the Moon is … Read more
HREDITY AND EVOLUTION CHAPTER ASSESMENT Q1. A Rewrite the statement by using correct option. ……. proposed a model for protein synthesis with the help of DNA in bacterial cells. Johann Gregor Mendel Walter and Sutton Francois Jacob and Jack Monad Hugo de Vries Information about protein synthesis is stored in the ……. mitochondria DNA … Read more