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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 ?
[2003]
  • a)
    They are morphologically distinct
  • b)
    They cannot interbreed in nature
  • c)
    They are reproductively distinct
  • d)
    They are physiologically distinct
Correct answer is option 'C'. Can you explain this answer?
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Nicotiana sylvestris flowers only during long days and N. tabacum flow...
Similar species show inter breeding characters, i.e., two organisms which breed freely in nature to produce fertile offsprings belong to the same species. The two species are considered separate because they are reproductively distinct.
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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 ?[2003]a)They are morphologically distinctb)They cannot interbreed in naturec)They are reproductively distinctd)They are physiologically distinctCorrect answer is option 'C'. Can you explain this answer?
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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 ?[2003]a)They are morphologically distinctb)They cannot interbreed in naturec)They are reproductively distinctd)They are physiologically distinctCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about 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 ?[2003]a)They are morphologically distinctb)They cannot interbreed in naturec)They are reproductively distinctd)They are physiologically distinctCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 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 ?[2003]a)They are morphologically distinctb)They cannot interbreed in naturec)They are reproductively distinctd)They are physiologically distinctCorrect answer is option 'C'. Can you explain this answer?.
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