Q. ܰ݅ܿݐ݅ܽ݊ܽ ݕݏ݈ݒ݁ݎݐݏ݅ݏ flowers only during long days and ܰ.ݐܾܽܽܿݑ݉ 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. tobaccum to be separate species?
A) They are physiologically distinct
B) They are morphologically distinct
C) They cannot interbreed in nature
D) They are reproductively distinct
Explanation
Biological concept of species says that only the members of a species can breed freely in nature to produce fertile offsprings. The plant tobacco (ܰ݅ܿݐ݅ܽ݊ܽ (has two different species, .ݏ݅ݎݐݏ݁ݒ݈ݕݏ ݅ܽ݊ܽݐܰ݅ܿ and ݉ݑܾܽܿܿݐ ݅ܽ݊ܽݐܰ݅ܿ These two species cannot reproduce freely.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.