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NEET Biology Anatomy of Flowering Plants Question Bank Self Evaluation Test - Anatomy of Flowering Plants

  • question_answer
    In the given figure of phloem tissue, identify the marked part (1, 2 and 3) which help in maintaining the pressure gradient in the sieve tubes.

    A) 1                     

    B) 2

    C) 3               

    D) None of the above

    Correct Answer: C

    Solution :

    [c] In the given fig. of phloem tissue 1, 2 & 3 are respectively sieve tube, phloem parenchyma and companion cells. Companion cells (3) are specialised parenchymatous cells adjacent to a sieve tube in the phloem of flowering plants. It is believed to regulate the flow of nutrients through the tube.       


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