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प्रश्न
What is the difference between a primary oocyte and a secondary oocyte?
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उत्तर
| Primary oocyte | Secondary oocyte |
| Primary oocyte is a diploid cell formed in foetal ovary when the gamete mother cell, oogonia is arrested at prophase-I of meiosis. | Secondary oocyte is the haploid cell formed from primary oocyte that completes its first meiotic division, during puberty and produces the female gamete ova. |
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संबंधित प्रश्न
With the help of diagrammatic representation, explain the process of gametogenesis
Name the hormones involved in regulation of spermatogenesis.
Answer the following questions in short.
Which precautions will you follow to maintain the reproductive health?
Multiple choice question.
The given figure shows human sperm. Various parts of it are labelled as A, B, C, and D. Which labelled part represents acrosome?
Give a schematic representation of spermatogenesis and oogenesis in humans.
Identify the proper order of spermatogenesis and choose the correct option.
Select the correct sequence of oogenesis.
Identify the enzyme released by the sperm which has lytic activity.
Which of the following is diploid?
Extrusion of second polar body from egg nucleus occurs ______.
Preparation of sperm before penetration of ovum is ______.
In spermatogenesis, reduction division of chromosome occurs during conversion of ______.
In oogenesis haploid egg is fertilised by sperm at which stage?
The prostate gland and seminal vehicle perform the function of ______.
Read the following and answer from given below:
Oogenesis is the process of the formation of an ovum in the ovaries. It consists of three phases: multiplication, growth, and maturation. Oogenesis is controlled by hormones GnRH, LH, FSH. GnRH secreted by the hypothalamus stimulates the anterior lobe of the pituitary gland to secrete LH and FSH.
Which cell division is involved in the formation of secondary oocytes?
If for a species 2n = 16, then during Ist prophase and IInd prophase of the meiotic division of a cell, how many tetrads and diads will be formed:
The region of the root tip whose cells undergo rapid elongation and enlargement and are responsible for the growth of the root in length is called the:
Which of the following cells during gametogenesis is normally diploid?
The spermatogonia undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above.
During reproduction, the chromosome number (2n) reduces to half (n) in the gametes and again the original number (2n) is restored in the offspring. What are the processes through which these events take place?
