Which part of the sperm help in its entry into the cytoplasm of the ovum ?
Plasma membrane
Nucleus
Neck
Acrosome
The correct option is(D): Acrosome.
The part of the sperm that helps in its entry into the cytoplasm of the ovum is the "Acrosome."
The acrosome is a specialized structure located at the tip of the sperm's head. It contains enzymes that are released upon contact with the zona pellucida, which is the outer protective layer of the ovum. These enzymes help in the process of fertilization by breaking down the zona pellucida, allowing the sperm to penetrate and enter the cytoplasm of the ovum.
Therefore, the acrosome plays a crucial role in facilitating the entry of the sperm into the ovum.
Student to attempt either option-(A) or (B):
(A) Study the given diagram showing the sectional view of a seminiferous tubule.
Answer the following questions:
OR
(B) Study the figures given below showing initial stages in the formation of female gametophyte and answer the questions that follow.
The manager asked the team to complete the project _______ the end of the week.
Rearrange the following parts to form a meaningful and grammatically correct sentence:
P. a healthy diet and regular exercise
Q. are important habits
R. that help maintain good physical and mental health
S. especially in today's busy world
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