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

Secretions from which one of the following are rich in fructose, calcium and some enzymes:

1. Liver
2. Pancreas
3. Salivary glands
4. Male accessory glands

In a human female, the blastocyst:
 

Identify the human development stage shown below as well as the related right place of its occurrence in a normal pregnant woman, and select the right option for the two together:

Ovulation in the human female normally takes place during which phase of the menstrual cycle:

1. Just before the end of the secretory cycle.

2. At the beginning of the proliferative phase.

3. At the end of the proliferative phase.

4. At the mid-secretory phase.

Mainly which hormones control the menstrual cycle in human beings:

1. FSH

2. LH

3. FSH, LH, Estrogen

4. Progesterone

Which set is similar:
1.  Corpus luteum – Graafian follicles
2.  Sebum-sweat
3.  Bundle of his – Pacemaker
4.  Vita $B_7$ - Niacin

Absence of acrosome will affect which activity in a normal sperm?

1. Maturation of sperm

2. Energy utilization for movement

3. Sperm motility

4. Penetration into the ovum

Which of the following in not associated with the secretion of milk in mammary glands?

1. Mammary duct

2. Mammary lobes

3. Mammary alveoli

4. Glandular cells

Choose the incorrect match