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

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

Sperm has several components out of which the function of the acrosome is to:

Fertilisation in humans is practically feasible only if

1. the ovum and sperms are transported simultaneously to ampullary-isthmic junction of the fallopian tube
2. the ovum and sperms are transported simultaneously to ampullary-isthmic junction of the cervix
3. the sperms are transported into cervix within 48 hrs of release of ovum in uterus
4. the sperms are transported into vagina just after the release of ovum in fallopian tube

In human females, meiosis-II is not completed until 

1. Puberty

2. fertilization 

3. Uterine implantation 

4. birth 

Choose the incorrect match

(1) Morula –                  8 to 16 blastomeres

(2) Blastocyst –             Implantation in
                                     Endometrium

(3) Second polar body – Completion of 1st
                                     meiotic division

(4) Foetal ejection reflex – Cortisol, estrogen,
                                      oxytocin

One of the following is haploid cell
1. Primordial germ cell
2. Oogonium
3. Primary oocyte
4. Secondary oocyte

Consider the following two statements:
I. Not all copulations lead to fertilization and pregnancy
II. Fertilization can occur if the ovum and the sperms are simultaneously transported to the fallopian tubes.
1. Both I and II are correct and II correctly explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct

What is the order of layers or space from outside to inside?

At the end of the second meiotic division, the human female germ cells differentiate to form

1. Oogonia

2. First polar body

3. Second polar body

4. Primary oocyte