What happens during fertilisation in humans after many sperms reach close to the ovum?

  • Option 1)

    Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida

  • Option 2)

    All sperms except the one nearst to the ovum lose their tails

  • Option 3)

    Cells of corona radiata trap all the sperms except one

  • Option 4)

    Only two sperms nearest the ovum penetrate zona pellucida

 

Answers (1)

As we discussed in concept

Events during Fertilisation -

During fertilisation, 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.

- wherein

This ensures that only one sperm can fertilise an ovum .

Reproducation

 

 

 


Option 1)

Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida

This option is correct.

Option 2)

All sperms except the one nearst to the ovum lose their tails

This option is incorrect.

Option 3)

Cells of corona radiata trap all the sperms except one

This option is incorrect.

Option 4)

Only two sperms nearest the ovum penetrate zona pellucida

This option is incorrect.

Preparation Products

Knockout NEET May 2023 (Easy Installments)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 5499/-
Buy Now
Knockout NEET Aug 2021 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 14000/- ₹ 4999/-
Buy Now
Knockout NEET Aug 2021

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 22999/- ₹ 9999/-
Buy Now
Test Series NEET Aug 2021

Unlimited Chapter Wise Tests, Unlimited Subject Wise Tests, Unlimited Full Mock Tests, Get Personalized Performance Analysis Report,.

₹ 6999/- ₹ 2999/-
Buy Now
Rank Booster NEET 2021

Booster and Kadha Video Lectures, Unlimited Full Mock Test, Adaptive Time Table, 24x7 Doubt Chat Support,.

₹ 13999/- ₹ 6999/-
Buy Now
Boost your Preparation for NEET 2021 with Personlized Coaching
 
Exams
Articles
Questions