Question

Fill in the blanks by selecting the correct word from the bracket and complete the given

paragraph.

(Semen, external, placenta, urinogenital duct, oviduct, ovum, internal, sperm, zygote, embryo)

__________ is ejaculated in vagina and passes to uterus and then to ________ in humans,

fertilization is ___________.

In fertilization ___________ is formed by fusion of ______________ and ovum and then it

undergoes repeated mitotic divisions to form ____________.​

Answer 1

Answer:

Semen is ejaculated in vagina and passes to uterus and then to oviduct in humans,

fertilization is internal.

In fertilization zygote is formed by fusion of sperm and ovum and then it

undergoes repeated mitotic divisions to form embryo.

Answer 2

Answer:

Semen is ejaculated in vagina an passes to uterus an the to oviduct in humans, fertilization is internal.

In fertilization zygote is formed by fusion of sperm and ovum and then it undergoes repeated mitotic divisions to form embryo.

Explanation:

Fertilization is a process where fusion of sperm{from male} and ovum{from female} fuse together to form zygote. It occurs as follows:

1.Estabilisation of contact between sperm and ova.

2. Regulation of sperm entry into the egg that only one sperm fuses with the egg.

3. Fusion occurs in the fallopian tube.

4.Fusion results in the formation of zygote which then becomes embryo and finally forms fetus.