After being released the secondary oocyte must be fertilized within:
1. 1 hour.
2. 12 hours.
3. 24 hours.
4. 72 hours.
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Capacitation occurs in
1. rete testis
2. epididymis
3. vas deferens
4. female reproductive tract
What happens during fertilisation in humans after many sperms reach close to the ovum?
1. | Only two sperms nearest the ovum penetrate zona pellucida |
2. | Secretions of acrosome help one sperm enter the cytoplasm of the ovum through zona pellucida |
3. | All sperms except the one nearest to the ovum lose their tails |
4. | Cells of corona radiata trap all the sperms except one |
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