1. How many types of aquatic habitats

2. Unit of electric current is.............

3. The largest artery is named as

4. How many important modes are for transmission of heat?

5. Rate of flow of charge is called

6. The ray of light which strikes the surface of other medium for its entry is called

7. The increase in blood pressure is due to narrowing of..............

8. The shrillness graveness of a sound is called.

9. The distance covered by a wave in one second is called

10. According to ............. Law Resistance is calculated by dividing voltage by current

11. Food becomes fine and soft by addition of..............

12. The organ which controls the entrance of food and air in the relevant tubes is called.................

13. ............... are reproductive organs of plants.

14. Our sun is.............. sized star

15. Mass number is denoted by..........

16. Molecules which form polymers are called.........

17. What is present in gastric juice?

18. The number of protons present in the nucleus of one atom of any element is called its

19. The formation of ghee from vegetable oil is an example of.............

20. The living place of any organism is called

21. A material which emits heat

22. The transfer of heat from a hot body to cold body without heating is called

23. The whorl of sepals is called..........

24. Bile is released by

25. The distance between two adjacent crests or troughs is called.........

26. Convection occurs only in.

27. Voltmeter is used for measurement of............

28. Loss of water from surface of leaves of plants is called

29. ................ Pushes the swallowed food intake into stomach

30. The formula to find maximum number of electrons in a given shell is