During adverse season, thermophytes survive by:

Related Mcqs:

1. Humidity – except for about 64 km inland coastal belt, where values of the relative humidity are the highest, especially during summer season with August as a humid month, the relative humidity in most part of the country is moderate, falling below _____ in the plains:

   A. 10%
   B. 15%
   C. 20%
   D. 25%

2. The minimum number of components required for an ecosystem to survive:

   A. Producer and primary consumer
   B. Producer and decomposer
   C. Primary consumer and decomposer
   D. Primary and secondary consumer
   E. Producer and secondary consumer

3. A habitat of long severe winters and growing season limited to a few months of summer constitutes:

   A. Savana ecosystem
   B. Taiga ecosystem
   C. Tundra ecosystem
   D. None of the above

4. The cold season, lasting from ______ , enjoys its major share from western disturbances which are also the source of snowfall in the Himalayas, Hindu Kush and Karakoram:

   A. December to February
   B. January to March
   C. March to May
   D. None of these

5. During anaerobic digestion of organic waste, such as in producing biogas, which of the following is left undegraded?

   A. Lignin
   B. Lipids
   C. Cellulose
   D. Hemi-cellulose

6. During food chain the maximum energy is stored in:

   A. Producers
   B. Decomposers
   C. Herbivores
   D. Carnivores

7. Methane gas is produced during the scientific process of:

   A. Hydrogenation
   B. Pyrolysis
   C. Bioconversion
   D. Incineration

8. During ecological succession from pioneers to climax community the biomass of vegetation:

   A. Increases, then decreases
   B. Remains constant
   C. Decreases continuously
   D. Increases continuously

9. Mark the correct sequence of events occurring during ecological succession:

   A. Nudation – ecesis – aggregation – migration
   B. Migartion – ecesis – aggregation – nudation
   C. Nudation – migration – ecesis – aggregation
   D. Nudation – ecesis – migration – aggregation

10. The earliest species of tree still surviving is the Maidenhair tree (Ginkgo biloba) of Zhexiang, ______, which first appeared about 165,000,000 years ago, during the Jurassic era:

    A. Korea
    B. Japan
    C. China
    D. Malaysia