Commensalism is:

Related Mcqs:

1. Commensalism is a relationship between two organism in which:

   A. One is benefitted, other remains unaffected
   B. One is benefitted, other remains unaffected
   C. Both are benefitted
   D. Both are unaffected

2. In submerged hydrophytes entry of CO2 is through:

   A. Epidermis as dissolved CO2
   B. Epidermis as carbonates only
   C. Epidermis as carbonates only
   D. Both (b) and (c)

3. Which one of the following is well-developed in hydrophyte?

   A. Aerenchyma
   B. Collenchyma
   C. Stomata
   D. Root system

4. The facultative heliophytes are infact:

   A. Heliophytes
   B. Chasmophytes
   C. Chersophytes
   D. Sciophytes

5. The serotinous cones show:

   A. In situ seed germination
   B. Longer viability
   C. early cone separation
   D. All these characters

6. Albido value refers to:

   A. Turbidity of solar radiations
   B. Percentage of solar absorption
   C. Percentage of reflected light by a surface
   D. Amount of light absorbed by forests

7. Soils having sub-optimum concentration of nutrient solution are called:

   A. Hypotrophic
   B. Eutrophic
   C. Heterotrophic
   D. Oligotrophic

8. The migration of locuats corresponds to:

   A. Periodic migration
   B. Long distance migration
   C. Short distance migration
   D. None of these

9. Desert plants are generally:

   A. Succulents
   B. Heterophyllous
   C. Herbaceous
   D. Viviparous

10. Development of soil from parent rock is termed as:

    A. Edaphic factor
    B. Pedogenesis
    C. Edaphotropism
    D. Edaphic climax