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

Name the function of the following: Sperm tail - Biology

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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 3: Human Reproduction - NCERT EXERCISES [पृष्ठ ११६]

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नूतन Biology [English] Class 12 ISC
अध्याय 3 Human Reproduction
NCERT EXERCISES | Q 15. (d) | पृष्ठ ११६

संबंधित प्रश्न

Name the function of the following:

Fimbriae


State the function of Fallopian tubes.


Mention the functions of Ovary.


Mention the exact location of the following : 
Corpus callosum 


The diagram alongside is the vertical section of female reproductive organs. Study the diagram and answer the questions that follow: 
(i) Name the fully developed part of ovary containing the ovum. (ii) Name the organ of the female body in which the foetus develops. 
(iii) What is ovulation? 
(iv) Which two hormones are secreted by ovary? 


The adjoining figure represents the female reproductive organ of the humans

(i) How does the human embryo developing in the uterus obtain its nourishment?
(ii) Which structure protects and nourishes the developing embryo?
(iii) Define ovulation.


Name the Following

The age or period when the reproductive organs become fully operational.


Name the Following

A female gonad is responsible for the production of ova.


Name the Following

The hormone that stimulates the contraction of the uterus during childbirth.


What is true of gametes?


______ pollen mother cells should undergo meiotic division to produce 64 pollen grains.


Which part of the fallopian tube collects to ovum after ovulation?


The development of lactiferous tubules during pregnancy is dependent on ____________.


The follicular fluid present in the antrum is secreted by ______


Ovulation occurs under the influence of ______.


In 28 days human ovarian cycle, ovulation occurs on ______.


When both ovaries are removed from rat which hormone is decreased in blood?


Which part of ovary in mammals acts as an endocrine gland after ovulation?


The external genitalia of the human female is called ______.


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.

In the female genital tract, sperms are made capable of fertilizing the egg. This phenomenon of sperm activation is called ______


In human beings, the correct sequence of events during reproduction is


Mother gives birth to a baby but the baby has characters of both parents. How is this possible?


Capacitation occurs in:


The oviducts are also known as ______.


Match the following:

Ovaries Bean shape
Fallopian tubes Almond shape
Uterus Funnel – shape
Kidney pear-shaped

The diagram given below shows a section of the human ovary.

  1. Name the process for the release of the part labelled 1.
  2. Write the name of the structure marked 2.

Given below is a group of terms. In the group, one pair indicates the relationship between the two terms. Rewrite and complete the second pair on a similar basis.

Leydig cells : Testosterone : ______ : Oestrogen.


The figure given below is the human female reproductive system. Study the same and answer the following questions.

  1. Label the guidelines 1 to 6 shown in the figure.
  2. What is the normal gestation period in human?
  3. Where are the sperms released during coitus?
  4. Write two important functions of part 2.
  5. Mention the technical term for the fixing of developing zygote to the uterine wall.

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