Exams › NEET › Biology

Nicotiana sylvestris flowers only during long days and N. tabacum flowers only during short days. If raised in the laboratory under different photoperiods, they can be induced to flower at the same time and can be cross fertilized to produce self-fertile offspring. What is the best reason for considering N. sylvestris and N. tabacum to be separate species?

1. They are morphologically distinct
2. They cannot interbreed in nature
3. They are reproductively distinct
4. They are physiologically distinct

Correct answer: They are reproductively distinct

Solution

Nicotiana sylvestris and N. tabacum can be induced to flower at the same time and can be cross-fertilized to produce self-fertile offspring. This indicates that they are reproductively compatible, but they are still considered separate species due to their distinct photoperiod requirements.

Related NEET Biology questions

• Pea plants were more suitable than cattle for Mendel's experiment because
• Identify the wrong statement about meiosis.
• Which condition of zygote cell will lead to birth of a normal human female child
• A human zygote has
• DNA in the offsprings is contributed by
• A common test to find the genotype of a hybrid is by

⚔️ Practice NEET Biology free + battle 1v1 →