NEET 2015 · Class 12

Organisms and Populations

In which of the following interactions both partners are adversely affected?

  1. (A)Competition
  2. (B)Predation
  3. (C)Mutualism
  4. (D)Parasitism

The NCERT line that answers it

Verbatim line

Depending on the outcome, these interactions between two species are classified as competition (both species suffer), predation and parasitism (one benefits and the other suffers), commensalism (one benefits and the other is unaffected), amensalism (one is harmed, other unaffected) and mutualism (both species benefit).

Chapter
Organisms and Populations
Section
11.1.4 Population Interactions
Page
15
Words matched
44 of 44

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states 'competition (both species suffer)', which directly matches the MCQ's requirement for an interaction where both partners are adversely affected, and distinguishes it from the other options.

We did this for 1,565 questions.

Every one traced to the exact sentence in NCERT that answers it, including 90% of the 2026 paper. Sit a mock on the real NEET 2027 computer interface and every mark you drop comes back with its line attached.

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Question text is reproduced from the published NEET 2015 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.