Question

_____Brainleist Questions ________

1. What are the functions of fallopian tubes?

2. How is the process of pollination in plants is different from fertilization?

3. Where does fertilization take place in human female.

4. How does the embryo get nourishment inside the Mother's body?

5. What is the role of seminal vesicle and prostate gland?

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Answer 1

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1.⚫ Fallopian tubes provide a connection between ovaries and the uterus. Fertilization takes place within the fallopian tubes. The zygote reaches up to the uterus, also through these tubes.

2.⚫ the pollination involves the transfer of pollen grains from stamen to stigma. It does not include the fusion of gametes. On the other hand, fertilization involves in the fusion of male and female gametes and formation of zygote.

3.⚫ The fertilization in human female takes place in fallopian tubes.

4.⚫ Inside mother's body, the embryo gets its nutrition through Placenta, which is a physiological connection between mother and the embryo.

5.⚫ seminal vesicle and prostate glands secrete a thick whitish fluid that nourishes the sperms and also provides in liquid medium to response for an easy transport.

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Answer 2

1) Fallopian Tubes/Uterine Tubes/Oviducts:
Fallopian tubes are a pair of muscular and internally ciliated (containing cilia or ciliary equivalent functions to move the ovum or ova) tubes of 10-12 cm length which lie horizontally over the peritoneal cavity arising from the ovary and ending near at the uterus

Functions of Fallopian tube: The passage of ovum or ova is facilitated by movements of cilia (as mentioned above) and muscular contractions of the Fallopian wall. They also have secretory columnar cells which produce a vicious secretion for nourishing and protection of ovum.

2) Pollination vs Fertilisation:
The pollen grains are immobile. They require an external stimuli or an external agent or force to reach towards the stigma. Pollination is nothing but transfer of pollen grains from anthers (microsporophylls) to stigmas (the receptive region of megasporophylls). It is of indirect type as compared to direct Pollination in gymnosperms. They are generally of two types- self Pollination and cross Pollination.
While seeing, in Fertilisation, there is a need for external factor (sperm) and also supplementary nutrients (nourishment of the foetus).

3) Fertilisation takes place in the human female, but, where?
Fertilisation takes place inside the ampulla (inside a swollen part just rearing the Fallopian tube, where it passes and rests in the ampulla in a temporary state). To fully fertilise the egg the sperm head should establish a contact with the lateral surface of the Fertilisation cone an break the previtelline space produced by the egg in order to penetrate onto it.

4) Embryo gets nourishment, but, how?
The Embryo or the foetus get their proper nourishment through the placenta itself where the foetus is attached to the placenta. The Uterine tissue has a number of blood sinuses so that the two blood vessels or bloods are very near to each other for exchange of materials (Inorganic organic nutrients, hormones and antibodies against various toxins and pathogens and oxygen pass from the mother to the foetus other waste are carried out by the mother and send backfor elimination such as CO2, nitrogenous wastes, etc.). It also acts as a barrier and a ultrafiltration for foetus.

5) Role of seminal vesicle? Prostate gland?

a) Seminal vesicles, function: They are responsible for a thick, viscous, mucoid (contains mucus), alkaline, having proteins include the soluble fibrinogen, fructose which do the nourishment of sperm for activity, citrate, inositol and prostaglandins being the ones to liquefy the cervical mucus and stimulate movements in the female tract.

b) Prostate gland, function: The secretion of prostate glands contain a thin, milky and are slightly alkaline in nature. It contains calcium, phosphate, citrate, a clotting enzyme and profibrolysin. Prostate gland secretion constitutes upto 20-30% of semen. It is truly essential for the motility of the sperms (removal causes sterility or immobile sperms).