NEET 2021 · Class 11

Cell: The Unit of Life

Which of the following is an incorrect statement?

  1. (A)Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles
  2. (B)Microbodies are present both in plant and animal cells
  3. (C)The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm
  4. (D)Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm

The NCERT line that answers it

Verbatim line

Some mature cells even lack nucleus, e.g., erythrocytes of many mammals and sieve tube cells of vascular plants.

Chapter
Cell: The Unit of Life
Section
8.5.10 Nucleus
Page
15
Words matched
18 of 18

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

How this line gives the answer

6667, emb=0.9802, combined=0.8548). Verified: high — The span explicitly states that sieve tube cells lack a nucleus, which directly contradicts option A's claim that mature sieve tube elements possess a conspicuous nucleus, making option A incorrect.

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Question text is reproduced from the published NEET 2021 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.