Commensalism is a relationship between two organism in which:

Related Mcqs:

1. Commensalism is:

   A. When both partners are harmed
   B. When both partners are benefited
   C. When weaker partner is benefited and the stronger is unharmed
   D. None of these

2. The transfer of energy from organism to organism is a natural community establishes:

   A. Food chains
   B. Biological control
   C. Natural barriers
   D. All the above

3. Those chemicals, which are released by one organism but they destroy the other organism are precisely called:

   A. Allomones
   B. Allelochemics
   C. Kairomones
   D. Depresants

4. Type of relationship in which one organism is benefitted while there is no effect on other:

   A. Symbiosis
   B. Commensalism
   C. Mutualism
   D. Parasitism

5. Study of relationship between communities and environment is called:

   A. Autecology
   B. Ethology
   C. Ecology
   D. Syncology

6. The relationship between the alga Microcystis and the surrounding fauna corresponds to:

   A. Amensalism
   B. Parasitism
   C. Predation
   D. Exploitation

7. The relationship between the alga Cladophora and the snail shell on which it grows corresponds to:

   A. Commensalism
   B. Predation
   C. Neutralism
   D. Mutualism

8. The relationship between a climber and the host corresponds to:

   A. Neutralism
   B. Mutualism
   C. Parasitism
   D. Commensalism

9. Relationship between nitrogen fixing bacteria and a legume plant is described as:

   A. Mutualistic
   B. Parasitic
   C. Saprophytic
   D. Commensal

10. Which one of the following is not a matching pair of certain organism/s and the kind of association?

    A. Shark and sucker fish-commensalism
    B. Algae and fungi in lichens-parasitism
    C. Orchids growing on trees-epiphytism
    D. Cuscuta (doder) growing on other flowering plants-epiphytism