Advertisements
Advertisements
प्रश्न
What is the difference between a primary oocyte and a secondary oocyte?
Advertisements
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. |
APPEARS IN
संबंधित प्रश्न
______ type of reproduction occurs without fusion of gametes.
In case of sexual reproduction, newborn show similarities about characters. Explain this statement with suitable examples.
In meiosis, the number of chromosomes becomes ___________.
If one pollen grain produces two male gametes, how many pollen grains are needed to fertilize 10 ovules?
The process which the sperm undergoes before penetrating the ovum is ____________.
Draw a labeled sketch of a spermatozoan.
Expand the acronym.
hCG
During spermatogenesis, spermatogonium grows in size to become ______.
Identify the proper order of spermatogenesis and choose the correct option.
Calculate the number of sperms and ova produced from 40 primary spermatocytes and 40 primary oocytes.
Identify the longest period of menstrual cycle.
Identify the enzyme released by the sperm which has lytic activity.
Identify the wrong statement from the following.
The head of the epididymis at the head of the testis is called ______.
Which of the following contains the actual genetic part of a sperm?
During oogenesis, each diploid cell produces ______.
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?
How many primary oocytes produce one oogonia?
During oogenesis the meiotic division is arrested at ______ before fertilization.
In which organ does oogenesis take place?
