NEET 1999 · Class 11

Structural Organisation in Animals

Temperature changes, in the environment, affect most of the animals which are

  1. (A)poikilothermic
  2. (B)homoiothermic
  3. (C)aquatic
  4. (D)desert living

The NCERT line that answers it

Verbatim line

They do not have constant body temperature i.e., their body temperature varies with the temperature of the environment.

Chapter
Structural Organisation in Animals
Section
7.2 Frogs
Page
1
Words matched
26 of 26

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 that animals whose body temperature varies with environmental temperature are called poikilotherms, which directly matches the MCQ's correct answer and distinguishes it from homoiothermic animals.

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Question text is reproduced from the published NEET 1999 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.