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Commensalism....

Commensalism.

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Commensalism : It is a class of relationship between two organisms where one organism benefited but other is neutral. (i.e., + and 0).
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Assertion : The epiphytes use the trees only for attachment and manufacture their own food by photosynthesis. Reason : Commensalism results in negative effects on the growth and survival of one or both of the populations.

Which statements are true? (a) One is benefitted and other unaffected in mutualism. (b) Both partners are benefitted in commensalism. (c ) One kills and feeds on another in predation. (d) Both partners are benefitted in symbiosis.

Population interactions {:("OrganismA","OrganismB","Name of interaction"),(+,+,"Mulualism"),(-,-,A),(+,-,"Predation"),(+,-,B),(+,0,"Commensalism"),(-,0,C):} '+' sign for beneficial interaction '-' sign harmful (detrimental) interation '0' sign of neutral interaction Find out what could be A,B and C

Which of the following statements regarding species interdependence are true? 1. An association of two species where one is benefited and other remains unaffected is called mutualism. 2. An interspecific association where both partners derive from each other is called commensalism. 3. A direct food relation between two species of animals in which one animals kills and feeds on another is referred as predation. 4. A relationship between two species of organism where both the partners are benefited from each other is called symbiosis.

Match column I with column II and select the correct option from the codes given below. Column I. A. Commensalism B. Parasitism C. Mutualism D. Amensalism Column II. (i) One inhibited, other unaffected (ii) One benefitted, other unaffected (iii) Both are benefitted (iv) One benefitted, other harmed

Match the following and select the correct combination from the given options {:(,underset(underset("interaction)")(("Population")))("Column I"),,underset(("Examples"))("Column II")),("A.","Mutualism","(i)","Ticks on dogs"),("B.","Commensalism","(ii)","Balanus and Chthamalus"),("B.","Prasitism","(iii)","Sparrow and any seed"),("D.","Competition","(iv)","Epiphyte on a mango branch"),("E.","Predation","(v)","Mycorrhiza"):}

[A] : When the organisms live together in such a manner that one organism benefitted , while other has no effects , it is called commensalism . [R] : In commensalism one partner derives benefit from the other partner without in any way benefitting or harming it .

Select the statement which best explains commensalism (a) One organism is benefitted (b) Both the organisms are benefitted (c) One organism is benefitted , other is not affected (d) One organism is benefitted , other is affected .

GURUKUL PUBLICATION - MAHARASHTRA PREVIOUS YEAR PAPERS- MARCH 2017-SECTION-II
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  6. Commensalism.

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  12. What are the uses of vaccine ?

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