8th Standard Syllabus & Materials
8th Standard
Tamilnadu 8th Standard கணிதம் இயற்கணிதம் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard கணிதம் எண்கள் Important Questions And Answers Study Material - QB365 Set B
NEW8th Standard
Tamilnadu 8th Standard கணிதம் எண்கள் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
Tamilnadu 8th Standard Social Science பொருளியல் - பொது மற்றும் தனியார் துறைகள் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science குடிமையியல் - நீதித்துறை Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science குடிமையியல் - பாதுகாப்பு மற்றும் வெளியுறவுக் கொள்கை Important Questions And Answers Study Material - QB365
Published on: 13/05/2022
QB365 provides detailed and simple solution for every Book back Questions in class 8 Science Subject. It will helps to get more idea about question pattern in every book back questions with solution.
latest Book back QuestionsDownload Tamil Nadu 8th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
What is tissue culture?
2.
What is an endangered species? Give two examples.
3.
Write the advantages of the Red Data Book.
4.
Mention four main reasons for the conservation of forests.
5.
What do you understand by the term bio magnification
1.
Tissue culture: It is the technique of growing plant cells, tissues, organs, seeds or other plant parts in a sterile environment on a nutrient medium.
2.
An endangered species is an animal or plant that is considered to be at the risk of extinction. It means that there are only few of them left on the earth and soon they might extinct. Eg: Snow Leopard, Asiatic lion Lion tailed macaque.
3.
(i) It helps to evaluate the population of a particular species.
(ii) The data given in this book can be used to evaluate the species at the global level.
(iii) The risk of a species becoming globally extinct can be estimated with the help of this book.
(iv) It provides guideline for implementing protective measures for endangered species.
4.
Conservation is protection, preservation, management of wildlife and natural resource such as forest and water. It help us to protect maintain and recover endangered animals and plant species.
5.
Biomagnification is the increase in contaminated substance due to the intoxicating environment. The contaminants might be heavy metals such as mercury, arsenic and pesticides such as polychlorinated biphenyls and DDT (Dichloro Diphenyl Trichloro ethane).
8th Standard Syllabus & Materials
8th Standard
Tamilnadu 8th Standard Social Science புவியியல் - புவிப்படங்களைக் கற்றறிதல் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science புவியியல் - கண்டங்களை ஆராய்தல் (ஆப்பிரிக்கா, ஆஸ்திரேலியா மற்றும் அண்டார்டிகா) Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science புவியியல் - தொழிலகங்கள் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science வரலாறு - காலங்கள் தோறும் இந்தியப் பெண்களின் நிலை Important Questions And Answers Study Material - QB365
Tamilnadu Stateboard 8th Standard Subjects
Tamilnadu Stateboard Standards
