Cryopreservation of tissue is done at the following temperature:

Related Mcqs:

1. Reduction of mechanical and vascular tissue and poor roots are found in:

   A. Hydrophytes
   B. Xerophytes
   C. Halophytes
   D. None of these

2. Mucilagenous tissue and chlorenchymatous cortex are characteristic of:

   A. Epiphytes
   B. Insectivorous plants
   C. Halophytes
   D. Mesophytes

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

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

4. 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

5. Measurement of the rate of O2 consumption in unit volume of water over a period of time is done to find out:

   A. Biogas generation
   B. Biological oxygen demand
   C. Biosynthetic path way
   D. Fermentation

6. Biological treatment of water pollution is done with the help of:

   A. Lichens
   B. Fungi
   C. Phytoplanktons
   D. None of the above

7. Terracing is done in:

   A. Desert areas
   B. Hilly areas
   C. Dry areas
   D. Plain areas

8. Contour binding is done to check:

   A. Rill erosion
   B. Gully erosion
   C. Ravine formation
   D. Sheeterision

9. The soil binding is done in the best way by:

   A. Algae
   B. Mycorrhizae
   C. Grasses
   D. All of these

10. 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