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If '+' sign is assigned to benefited int...

If '+' sign is assigned to benefited interaction '-' sign to detrimental and '0' sign to neutral interaction, then the population interaction represented by '+' '-' refers to:

A

mutualism

B

amensalism

C

commensalism

D

parasitism

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The correct Answer is:
D
Parasitism is a relationship between two living organisms of different species in which one organism, i.e. parasite obtains its food directly from the host. In this relationship the parasite is benefitted (+) and the host is harmed (-). So, this type of population interaction is represented by '+', '-'.
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Population Interactions

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If '+' sign is assigned to beneficial interaction, '-' sign to deterimental and '0' sign to neutral represented by '+ '-' refers to

(+,-) type of populaton interaction is represented by :

Refer to the given table. If '+' sign has been assigned for beneficial interaction, '-' sign for detrimental interaction and '0' for neutral interaction, identify the type of interaction (i),(ii) and (iii) and select the correct option. {:("Species","Species B","Type of interaction"),(-,-,(i)),(+,-,(ii)),(+,0,(iii)):}

Mark the incorrect match (w.r.t. population interactions)

Define the term population interactions. State its two types

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-ORGANISMS AND POPULATION-Exercise
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  4. Which of the following is correct for r-selected species ?

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