1. What do organisms require to grow
2. What happens to the nutrients which are nerve lost from the ecosystem
3. The movement of nutrient elements through the various components of an ecosystem is know as____
4. The nutrient cycle can as well be called ___
5. What does nutrient cycle involve
6. The essential elements required by organisms for their body building and metabolism is called ___
7. Which cycle involve movement carbon between living organisms,the atmosphere and Earth crust
8. Which cycle involves the conversion of nitrogen gas into usable forms by bacteria
9. Which balance is essential for maintaining the proper concentration of carbon dioxide and oxygen
10. ____ is the process which involves the breakdown of dead organic matter into simpler substances
11. Which element is the primary component of organic molecules in living organisms
12. Which process involves the conversion of nitrogen compounds into nitrogen gas and it's back into the atmosphere
13. The process that involves the release of water vapour from plants leaves is called __
14. ______ us the transfer of pollen grains to the stigma of a pistil
15. ____ is the transfer of pollen grains form the anther to the stigma of another flower of same plant
16. Which of the following takes the food to the stomach
17. Digestion of food starts form which organ in the human digestive system
18. The bile juice is formed in the ____
19. Saliva helps in digestion of _____
20. Which part of the digestive system helps in the absorption of water and some salts from the undigested food materials
21. Photosynthesis is the _______
Theory; Answer any three questions of your choice
