" /> -->

Botany - Ecosystem - Two Marks Study Materials

12th Standard EM

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Biology

Time : 00:45:00 Hrs
Total Marks : 30
    15 x 2 = 30
  1. Productivity of profundal zone will be low. Why?

  2. Discuss the gross primary productivity is more efficient than net primary productivity.

  3. Pyramid of energy is always upright. Give reasons

  4. What will happen if all producers are removed from ecosystem?

  5. According to A.G. Tansley, what is an ecosystem?

  6. Mention any two climatic factors and edaphic factors of an ecosystem.

  7. Name the macro consumers and micro consumers.

  8. How Net Primary Productivity .ean be derived?

  9. Expand GPP and define it.

  10. State the role of herbivores and microconsumers in a terrestrial ecosystem.

  11. Define food chain.

  12. Name the two types of food chain.

  13. Cite few examples of biomolecules that contain phosphorus.

  14. Which kind of organisms constitute the pioneer community and climax community of a Hydrosere succession?

  15. Define plant succession.

*****************************************

TN 12th Standard EM Biology free Online practice tests

Reviews & Comments about 12th Botany - Ecosystem - Two Marks Study Materials

Write your Comment