Green house effect refers to:

Related Mcqs:

1. Green-house effect is due to the presence of:

   A. Ozone layer in the atmosphere
   B. Infra-red radiations
   C. Moisture in the atmosphere
   D. CO2 in the atmosphere

2. The non-green plants are as important as the green plants because they:

   A. Cause human disease
   B. Cause diseases of other plants
   C. Are useful in several industries
   D. Bring about decomposition of dead animals and plant remains

3. The major contributor to green house gases to the atmosphere is:

   A. Russia
   B. USA
   C. Brazil
   D. Germany

4. Today, concentration of green house gases is high because of:

   A. Use of refrigerator
   B. Increased combustion of oil and coal
   C. Deforestation
   D. All the above

5. Gases commonly referred to as ‘green house gases’ are:

   A. CH4, N2, CO2 and NH3
   B. CO2, O2, NO2 and NH3
   C. Chloro-fluoro-carbons, CO2, NH3 and N2
   D. CO2, chloro-fluoro-carbons, CH4 and NO2

6. Greenhouse effect refers to:

   A. Production of cereals
   B. Trapping of UV rays
   C. Cooling of earth
   D. Warming of earth

7. Green filler is used against which type of pollution?

   A. Air
   B. Water
   C. Soil
   D. Noise

8. Which group of three living organisms, given below is a link in food chain: Green plants …. Hawk:

   A. Grasshopper, frog, snake
   B. Grasshopper, rat, snake
   C. Millipedes, centipedes, sparrow
   D. Earthworm, hen, rat

9. A place was rocky and barren but now there is a green forest; the sequence of origin is:

   A. Lichen, mos, herbs, shrubs
   B. Moss, lichen, herbs, shrubs
   C. Lichen, moss, shrubs, herbs
   D. Shrubs, herbs, moss, lichen

10. The sequence: blue green algae – crustose lichen – foliose lichen – mosses – shrubs – dicot trees represent

    A. Genetic drift
    B. Ecological succession trend
    C. A food pyramid
    D. A phylogenetic trend