Aquatic animals excrete nitrogenous waste commonly in the form of_____________?

Related Mcqs:

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

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

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

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

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

   A. Excretion
   B. Circulation
   C. Reproduction
   D. Pollution

   Submitted by: Yousuf Sanjrani

4. Amount of water required to excrete 1gN of Urea is_________?

   A. 1 ml
   B. 50 ml
   C. 100 ml
   D. 150 ml

5. Which of the following fishes excrete large volume of diluted urine?

   A. Bony Marine fishes
   B. Fresh water fishes
   C. Both depending upon the surrounding water
   D. None of these

6. Which of the following fish drink large amount of sea water and excrete concentrated urine resulting in maximum salt excretion and minimal water loss?

   A. Hagfish
   B. Fresh water fishes
   C. Bony fishes
   D. None of these

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

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

8. The productivity of aquatic ecosystem is basically determined by light and____________?

   A. CO2
   B. O2
   C. Water
   D. Nutrients

9. Aquatic arthropods respire through__________?

   A. Spiracles
   B. Gills
   C. Book lungs
   D. Both b and c

10. In animals excess of nitrogen is excreted primarily in form of___________?

    A. Creatinine
    B. Trimethyamine oxide
    C. Pyrimidine
    D. Ammonia