NEET 2021
- Exam
- NEET
- Year
- 2021
- Subject
- Botany
- Chapter
- Cell - The Unit of Life
NEET 2021 · Botany · Cell - The Unit of Life
Which of the following is an incorrect statement?
Which of the following is an incorrect statement?
Options
- AMature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles.
- BMicrobodies are present both in plant and animal cells.
- CThe perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm.
- DNuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm.
Correct answer
A. Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles.
Step-by-step solution
A mature sieve element possesses a peripheral cytoplasm and a large vacuole but lacks a nucleus. The functions of sieve tubes are controlled by the nucleus of companion cells. The companion cells are specialised parenchymatous cells, which are closely associated with sieve tube elements.