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What happens during fertilisation in humans after many sperms reach close to the ovum?
  • a)
    Cells of corona radiata trap all the sperms except one
  • b)
    Only two sperms nearest the ovum penetrate zona pellucida
  • c)
    Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida
  • d)
    All sperms except the one nearest to the ovum lose their tails
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
What happens during fertilisation in humans after many sperms reach c...
The process of fusion of a sperm with an ovum is called fertilization. During fertilization, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of additional sperms. Thus, it ensures that only one sperm can fertilize an ovum. The secretions of the acrosome help the sperm enter into the cytoplasm of the ovum through the zona pellucida and the plasma membrane. In contact with the surface of egg covering, the acrosome releases its contained hydrolytic enzymes, also called sperm lysins. It is known as acrosomal reaction. Acrosome reaction results in dissolving of corona cells and degeneration of zona pellucida which helps in sperm penetration.
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What happens during fertilisation in humans after many sperms reach close to the ovum?a)Cells of corona radiata trap all the sperms except oneb)Only two sperms nearest the ovum penetrate zona pellucidac)Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucidad)All sperms except the one nearest to the ovum lose their tailsCorrect answer is option 'C'. Can you explain this answer?
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What happens during fertilisation in humans after many sperms reach close to the ovum?a)Cells of corona radiata trap all the sperms except oneb)Only two sperms nearest the ovum penetrate zona pellucidac)Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucidad)All sperms except the one nearest to the ovum lose their tailsCorrect 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 What happens during fertilisation in humans after many sperms reach close to the ovum?a)Cells of corona radiata trap all the sperms except oneb)Only two sperms nearest the ovum penetrate zona pellucidac)Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucidad)All sperms except the one nearest to the ovum lose their tailsCorrect 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 What happens during fertilisation in humans after many sperms reach close to the ovum?a)Cells of corona radiata trap all the sperms except oneb)Only two sperms nearest the ovum penetrate zona pellucidac)Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucidad)All sperms except the one nearest to the ovum lose their tailsCorrect answer is option 'C'. Can you explain this answer?.
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