NEET UG 2020 · Zoology · Question 25
NEET 2020 Zoology, question 25
Question 25 of the NEET 2020 paper (code E1) is a Zoology question from Structural Organisation in Animals. Its idea, Nervous System Distribution and Survival, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.
Updated 2026-10-08
Q25 · Zoology
If the head of cockroach is removed, it may live for few days because :
- 1the supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen.
- 2the cockroach does not have nervous system.
- 3the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body.Official answer
- 4the head holds a 1/3rd of a nervous system while the rest is situated along the dorsal part of its body.
Official answer: option 3 · NTA final answer key
Same idea
The only question on Nervous System Distribution and Survival
No other NEET paper from 2017–2026 tested this exact idea.
Nervous System Distribution and Survival: every question and how it was framed
The chapter
Structural Organisation in Animals in ten years of NEET
27 questions from 2017–2026, asked in 10 of 10 papers, about 2.6 a paper. Cockroach Anatomy alone had 9.