Question

Nuclears for the first time was observed in the leaves of the following 1) orchids 2) onion 3) oak 4)20 years
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Answer 1

Nuclear are discovered in the orchid leaves

Answer 2

Question - Nucleus for the first time was observed in the leaves of the following 1) orchids 2) onion 3) oak 4)20 years

Answer - Correct option is - 1) orchids

• Nucleus is central and most important part of the cell.
• It stores genetic information and directs functioning of cell by metabolism, protein expression etc.
• Robert Brown described the nucleus of cell in detail for the first time.
• He observed them in epidermal cells of orchid.
• He observed opaque area in the cell.
• Along with nucleus, he also called it areola.