Q22 / 180 · NEET 2018 · Botany
Which of the following is true for nucleolus?
- AIt takes part in spindle formation
- BIt is a membrane-bound structure
- CLarger nucleoli are present in dividing cells
- Correct answerDIt is a site for active ribosomal RNA synthesis
Solution
The nucleolus is a naked, round or slightly irregular structure in the nucleus. It lacks a membrane and its contents are in direct contact with the nucleoplasm. It is a site for active ribosomal RNA (rRNA) synthesis.
Microtubules take part in the spindle formation. Mitochondria, vacuoles, and plastids. etc. are membrane-bound structures. The dividing cells possess a large number of mitochondria.
Microtubules take part in the spindle formation. Mitochondria, vacuoles, and plastids. etc. are membrane-bound structures. The dividing cells possess a large number of mitochondria.
Hence, the correct answer is option: 'D'.