The Escherichia cells in a human excreta number in:

Related Mcqs:

1. Escherichia coli is used as an indicator organism to determine pollution of water with:

   A. Heavy metals
   B. Faecal matter
   C. Industrial effluents
   D. Pollen of aquatic plants

2. Microorganism living in our intestine and feeding on excreta is:

   A. Mutualism
   B. Symbiosis
   C. Co-operation
   D. Commensalism

3. In human beings, anoxia is caused due to:

   A. SO2
   B. CO
   C. CO2
   D. NO2

4. Through food chain radioactive Sr (Sr90) is deposited in which part of human body?

   A. Kidneys
   B. Thyroid
   C. Bones
   D. Muscles

5. A very harmful fibrous component causing pollution an inflicting diseases of lungs in human beings:

   A. Grease
   B. Asbestos
   C. Eichhornia roots
   D. ABS micelle

6. CO is harmful to human being because:

   A. It decreases CO2 concentration
   B. It competes O2 to combine with haemoglobin
   C. It is carcinogenic
   D. It depletes O3 layer

7. Each human couple should produce only two children which help in:

   A. Checking pollution
   B. Fertility of soil
   C. Stabilizing the ecosystem
   D. Improving food-web

8. Exposure of human beings to high energy from nuclear power plants can cause:

   A. Cancer of skin and bone
   B. Cancer of heart and brain
   C. Cancer of skin and bone marrow
   D. Cancer of kidneys

9. The necessary human resources could be developed through a combination of activities initiated with the objective of:

   A. Improving data management
   B. Monitoring and research to improve enforcement of legislation, both facilitative and regulatory
   C. Implementing appropriate and multiple use strategies
   D. All of the above

10. Habitat destruction is the indirectly acting factor while _____ hunting are the main direct human factors affecting wildlife populations:

    A. Legal
    B. Illegal
    C. Both (a) & (b)
    D. None of these