NEET Biology Sexual Reproduction in Flowering Plant / फूलों के पौधों में यौन प्रजनन Question Bank Critical Thinking Questions

  • question_answer
    Which of the following statement is correct for the pollen tube [NCERT 1980; CBSE PMT 1993]

    A) It shows chemotactic movement

    B) It shows only tip growth

    C) It is composed of three non-cellular zones

    D) It shows radial cytoplasmic streaming

    Correct Answer: A

    Solution :

    The movement of pollen tube towards embryo sac though style is chemotactic as it secrets pectinases and other hydrolytic enzymes to create a passage for its entry into style. 


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