NEET UG 2022 · Botany · Question 112
NEET 2022 Botany, question 112
Question 112 of the NEET 2022 paper (code R1) is a Botany question from Anatomy of Flowering Plants. Its idea, Heartwood versus Sapwood, was asked 3 times, in 2017, 2020 and 2022, across NEET 2017–2026. The NTA final answer key gives option 2.
Updated 2026-10-08
Q112 · Botany
In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to :
(a) secretion of secondary metabolities and their deposition in the lumen of vessels.
(b) deposition of organic compounds like tannins and resins in the central layers of stem.
(c) deposition of suberin and aromatic substances in the outer layer of stem.
(d) deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem.
(e) presence of parenchyma cells, functionally active xylem elements and essential oils.
Choose the correct answer from the options given below :
- 1(b) and (d) Only
- 2(a) and (b) OnlyOfficial answer
- 3(c) and (d) Only
- 4(d) and (e) Only
Official answer: option 2 · NTA final answer key
Same idea
Heartwood versus Sapwood, in other papers
NEET asked this idea 3 times, in 2017, 2020 and 2022. The other 2 questions below.
- 2020 Q29Identify the incorrect statement.One-line MCQ · Easy
- 2017 Q178Identify the wrong statement in context of heartwood :One-line MCQ · Medium
Heartwood versus Sapwood: every question and how it was framed
The chapter
Anatomy of Flowering Plants in ten years of NEET
25 questions from 2017–2026, asked in 9 of 10 papers, about 2.4 a paper. Plant Tissues and Anatomy alone had 25.