The temperature of surface water of oceans is about 25C and it is 5?C at the depth of few hundred meters in the:

Related Mcqs:

1. The percentage of water found in oceans is:

   A. 89%
   B. 93%
   C. 97%
   D. 86%

2. The greatest biomass of autotrophs in the world’s oceans is that of:

   A. Benthic brown algae, coastal red algae and daphnids
   B. Benthic diatoms and marine viruses
   C. Sea-grasses and slime-molds
   D. Free-floating microalgae, cyanobacteria and nanoplankton

3. The reservoir of Mangla is being silted at the rate of 48.27 million m3 per year and that of Tarbela at the rate of _____ million cubic meters per year:

   A. 160.5
   B. 167.75
   C. 170.6
   D. 175.8

4. The world’s tallest cut Christmass tree was 67.36 meters (221 ft.) tall Douglas fir (Pseudosuga menziesil):

   A. 67.36 meters (221 ft.)
   B. 70 meters
   C. 75 meters
   D. None of these

5. In which one of the following habitats does the diurnal temperature of soil surface vary most:

   A. Forest
   B. Desert
   C. Grassland
   D. Shrub land

6. If there were no CO2 in the earth’s atmosphere, the temperature of earth’s surface would have been:

   A. same as present
   B. Less than the present
   C. Higher than the present
   D. Dependent on the amount of O2 in the atmosphere

7. Plant groups growing in zones where high temperature alternates with low temperature are called:

   A. Megatherms
   B. Hekistotherms
   C. Microtherms
   D. Mesotherms

8. Temperature – with June the hottest month, summer (May to August) in plains is very hot and daily maximum temperature normally exceed 40

   A. Upper Punjab
   B. Upper Sind
   C. Upper KPK
   D. None of these

9. Depth of snowfall varies from ________ increasing with elevation in case of dry temperate forests:

   A. 1.4 to 6.0 m
   B. 1.5 to 7.0 m
   C. 1.6 to 8.0 m
   D. None of these

10. The orange and red wave lengths of light are able to penetrates in a sea upto a depth of:

    A. 5 meters only
    B. 20 meters only
    C. 50 meters
    D. 80-100 meters