TNPSC - 9th Standard Science Notes for All Exam Group 1, Group 2, VAO, UPSC, SSC

1. The backbone of DNA is made of ______

Answer: Sugar and Phosphate

2. Two daughter nuclei are formed during ______

Answer: Telophase

3. The Chromatids are joined at _______

Answer: Centromere

4. Iodine Crystals can be separated from sand by ______

Answer: Sublimation

5. Homogeneous mixtures are called as _______

Answer: Solution

6. The longest bone in our body is ______

Answer: Femur

7. How many Chambers in  Cockroach heart?

Answer: 13

8. What is the biggest storehouse of Water?

Answer:  Ocean

9. Oxygen forms, about _______ of the air in the atmosphere

Answer: 20 %

10.The Process by which plants produce their food is _______

Answer: Photsynthesis