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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Name the function of the following: Sperm tail

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प्रश्न

Name the function of the following:

Sperm tail

लघु उत्तरीय
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उत्तर

The tail is an extremely vibrating posterior section of the sperm that aids in swimming. The capacity to swim (known as motility) is required for male fertility because the sperm has to move up the vaginal canal, cervix, and cervical canal to reach the ovum.

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अध्याय 2: Human Reproduction - EXERCISES [पृष्ठ ४०]

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एनसीईआरटी Biology [English] Class 12
अध्याय 2 Human Reproduction
EXERCISES | Q 15. (d) | पृष्ठ ४०
नूतन Biology [English] Class 12 ISC
अध्याय 2 Human Reproduction
NCERT EXERCISES | Q 15. (d) | पृष्ठ ११६

संबंधित प्रश्न

Given here is a section of the female reproductive system of human beings.

Name the parts labelled 1 to 4


Describe the human female reproductive system with a labelled diagram.


Choose the odd one in each of the following: 

Seminiferous tubule; ovum; epididymis; sperm duct; urethra 


Rewrite the terms in the correct order so as to be in a logical sequence. 

Graafian follicle, ostium, uterus, fallopian tube.

 


 The diagram given below represents a system in the human body. Stud the diagram and answer the following questions: 

Mention the number and the name of the part involved in fertilization and implantation from the above diagram. 


Choose the correct answer:
Ovum is a ______________


Name the following:
The parts of the ovary containing mature ovum.


Complete the following statement by choosing the correct alternative:
Menstrual flow is a character is the feature of ______.


Differentiate between the graafian follicle and corpus luteum.


The below diagram represents the sectional view of the female reproductive organs of a mammal.

(i) Label the parts numbered 1 to 7.
(ii) What are the main functions of the parts labeled 2, 5, 6?


Name the Following

Surgical operation of the fallopian tubes in females for family planning.


Generally, every month, __________ ovum is released in the abdominal cavity alternately from each ovary.


Estrogen is secreted by ______


Mark the CORRECT sequence of structures in the breast from the inner to the outer side.


The estrus cycle is a characteristic of ______.


The second maturation division of the mammalian ovum occurs ______.


The embryo in humans gets nutrition from the mother’s blood with the help of a special tissue called ______ 


Tubectomy is carried out by blocking the ______ 


Read the following and answer from given below:

During copulation, semen is released by the penis into the vegina. The motile sperms swim rapidly, fuse with the ovum in the ampullary region, resulting in fertilization. The haploid nucleus of sperm fuses with that of the ovum to form a diploid zygote.

What is the signifacance of fertilisation?


How does fertilisation take place? Fertilisation occurs once in a month. Comment.


With a suitable diagram, describe the organisation of mammary gland.


In which part of the human female reproductive system do the following events take place?

Release of first polar body


The ______ is also called the womb.


The______ is also called the womb.


Describe the female reproductive systems in humans.


The ______ is also called the womb.


Name these:

2 hormones secreted from the corpus luteum.


Choose the odd one out from the group of terms given below and write the category for the remaining terms:


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