8th Standard Syllabus & Materials
8th Standard
TN 8th Tamil இயல் 3 - கல்வி கரையில - வினைமுற்று Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - மயங்கொலிகள் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை -பட்டமரம் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - இயற்கையை போற்றுவோம் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 1 - தமிழ் இன்பம் - ஆழிக்கு இணை Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2-ஈடில்லா இயற்கை - திருக்குறள் Important Questions And Answers Study Material - QB365 Set A
Published on: 16/06/2021
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.
Download 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.
Define Metabolism?
2.
Differentiate between Osmoconformers and Osmoregulators?
3.
Name the processes by which air enters and comes out of our lungs?
4.
State different types of tissues.
5.
Explain why are you not able to breathe normally when you are in closed and crowded places?
1.
Metabolism is the sum total of the biochemical reactions involves in release and utilization of energy or energy exchange within the organisms.
2.
| Osmoconformers | Osmoregulators |
|---|---|
| Osmoconformers try to maintain the osmolality of their body matching with their surroundings. eg: Most of the invertebrates, marine organisms |
Organisms maintain their internal osmolaliry which canbe extremely different from that of the surrounding environment, through physiological processes. eg: Human |
3.
► Air enters in Inspiration
► Air comes out Expiration
4.
There are 4 types of tissues.
i) Epithelial tissue
ii) Muscular tissue
iii) Connective tissue
iv) Nervous tissue
5.
In a closed room there will be poor ventilation. The oxygen in the closed room or crowded area will be used up by the people. As a respiration the concentration of carbon di oxide in air increases. There will no supply of oxygen. As oxygen is necessary for respiration we feel suffocated in closed and crowded places.
8th Standard Syllabus & Materials
8th Standard
TN 8th Tamil இயல் 3 - கல்வி கரையில - பாடறிந்து ஒழுகுதல் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 3-கல்வி கரையில - பல்துறைக் கல்வி Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 3-கல்வி கரையில - புத்தியைத் தீட்டு Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - தமிழர் மருத்துவம் ( நேர்காணல்) Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 8th Standard Subjects
Tamilnadu Stateboard Standards
