Objective for Ecophysiology

Multiple Choice Questions (MCQs)

1. Which of the followings form visible spectrum?

(a) 400-750       (b) 300-600                  (c) 200- 700      (d) 400- 500

2. The ultraviolet radiations have wavelengths less than:

(a) 300              (b)400                         (c) 700              (d) 500

3. The infrared radiations are more than:

(a) 300              (M400                          (c) 750              (d) 500

4. The plants which grow best at lower light intensities are:

(a) Seiophytes (b) !lel iphytes                (c) Facultative sciophyte

5. The study of soil is called:

(a) Edaphology (h) Ecology                   (c) Synecology (d) Auteeology

6. The parent material formed by the breakdown of rocks is:

(a) Residual       (b) Colluviall                 (c) Aeolian         (d) Alluvial

7. The soil transported by gravity or wind is:

(a) Residual       (b) Colluviall                 (c) Aeolian         (d) Alluvial

8. Soil transported by water is called:

(a) Residual       (b)Colluviall                  (c) Aeolian         (d) Alluvial

9. The soil with more than 2nun particles is:

(a) Gravel         (b) Coarse Sand            (c) Fine Sand (d) Silt

1. The soil of with particle size 0.0-0.002 mm is called:

(a) Gravel         (b) Coarse Sand            (c) Fine Sand (d) Silt

1. The soil particles less than 0.002 mm is:

(a) Gravel         (b) Clay                       (c) Fine Sand (d) Silt

2. The percentage of water in garden soil is:

(a) 10               (b) 20                          (c) 25                (d) 50

3. The soil composed of silicates (Si203) containing Al and one
   or more of K, Mg. Fe. H is:

(a) Quartz         (b) Feldspar                 (c) Pyroxene (d) Mica

4. The soil with hanterystals-is:(a) Quartz    (b) Feldspar            (c) Pyroxene (d) Mica
   5. The soil composed of silicates of Fe and Mg is:

   (a) Quartz    (b) Olivine               (c) Pyroxene (d) Mica

   6. The material formed by recently fallen leaves is called:

   (a) Litter       (b) Duff                (c) Leaf mold (d) None

   7. The layer present below the duff is:

   (a) Liner        (b) Duff                (c) Leaf mold (d) None
   Answers

   1. (a) 2. (b) 3. (b) 4. (d) 5. (a) 6. (a) 7. (a) 8. (d ) 9. (a) 10. (d) 11. (b) 12. (c) 13. (d) 14. (c) 15. (b) 16. (a) 17. (c)

5. Fill in blanks
6. 1. The physical and biological condition under which an organism lives is called________
   2. The plants which grow best in full sunlight are called_____
   3. The plants which grow best at lower light intensities are called________
      1. The study of soil is called Edaphology. The weathered layer of the earth crust is called_____
      2. Soil microorganisms like ____ and fungi are responsible for decay of organic matter.
      3. ________ lives in leguminous roots.
      4. The soil containing 100% organic matter is known as________
      5. This decomposed material is called raw humus or__
      6. The plants grow in water reservoirs like ponds, lakes streams or rivers are called ______
      7. The__________ loving plants are amphibiophytes.
         

         Ans 1.environment 2. heliophytes 5. bacteria        6. Rhizobium 9. hydrophytes 10. moisture

         3. sciophytes 4. soil 7. peat                   8. mor

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