Multiple choice

Nicotiona 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-fertilised to produce self fertile offspring. What is the best reason for considering N sylvestris and N tabacum to be separate species?

  1. They cannot interbreed in nature.

  2. They are reproductively distinct.

  3. They are physiologically distinct.

  4. They are morphologically distinct.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Species is a naturally interbreeding population of organisms.

Keep practicing — related questions