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Question

What is the best reason for considering N. sylvestris and N. tobacum to be separate species?


Your Answer
A
They are physiologically distinct
Your Answer
B
They are morphologically distinct
Correct Answer
C
They cannot interbreed in nature
Your Answer
D
They are reproductively distinct

Solution

The correct option is C They cannot interbreed in nature

Biological concept of species says only the members of a species can breed freely in nature to produce fertile offsprings. The plant tobacco (Nicotiana) has two different species, N. sylvestris and N. tobacum. These two species cannot reproduce freely.

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