The elimination of toxic nitrogenous waste and excess water in man is by______?

Related Mcqs:

1. The main nitrogenous waste formed in the body of earthworm is/are___________?

   A. Ammonia
   B. Urea
   C. Uric acid
   D. Trimethylamine oxide

2. Aquatic animals excrete nitrogenous waste commonly in the form of_____________?

   A. Ammonia
   B. Urea
   C. Uric acid
   D. Trimethylamine oxide

3. Which of the following animal excrete nitrogenous waste mainly as uric acid?

   A. Hydra
   B. Planaria.
   C. Humans
   D. Birds.

4. Each turn of DNA contain ____________ nitrogenous base pairs?

   A. 5
   B. 10
   C. 20
   D. 25

5. Removal or degradation of environmental pollutants or toxic materials by living organisms is called__________?

   A. Integrated disease management
   B. Hydroponic culture technique
   C. Pasteurization
   D. Bioremediation

6. Which of the following is most toxic?

   A. Ammonia
   B. Urea
   C. Uric acid
   D. Trimethylamine oxide

7. Which one of the following toxic metals is extensively present in newspaper?

   A. Mg
   B. Cd
   C. Pb
   D. Hg

   Submitted by: Eesha Khalid

8. The movement of water molecules from a region of higher water potential to a region of lower water potential (through membrane)

   A. Deffusion
   B. Osmosis
   C. Active transport
   D. None of these

9. The common waste material in bacteria is____________?

   A. Glycogen
   B. Lactic acid
   C. Ammonia
   D. Urea

10. Malphighian tubules absorb waste materials and salts from__________?

    A. Blood
    B. Lymph
    C. Gut
    D. Hemolymph