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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
Identify True/False statement. Correct the false statement to make it true.
Oogenesis takes place in the corpus luteum.
Fill in the blank.
Implantation of embryo occurs in ------
Fill in the blank.
---------- type of reproduction occurs without fusion of gametes.
Body breaks up into several fragments and each fragment starts to live as a new individual. This is ______ type of reproduction.
In case of sexual reproduction, newborn show similarities about characters. Explain this statement with suitable examples.
Describe the process of oogenesis in human female.
Sex organs produce gametes which are diploid.
Mammalian egg is ____________.
Identify the proper order of spermatogenesis and choose the correct option.
Identify the CORRECT sequence of events.
Identify the enzyme released by the sperm which has lytic activity.
Which of the following contains a fluid filled cavity called antrum?
There is no cell division involved in ______.
Preparation of sperm before penetration of ovum is ______.
During oogenesis, each diploid cell produces ______.
In oogenesis haploid egg is fertilised by sperm at which stage?
The spermatogonia undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above.
Given below are two statements.
- Statement I: The spermatids are non-motile and non-functional which get transformed into functional spermatozoa by the process of spermiogenesis.
- Statement II: During the process of this change, the spermatids remain held to each other and to Leydig's cells by cytoplasmic bridges.
In light of the above statements, select the correct answer from the option given below.
What is spermatogenesis?
Distinguish between human sperm and ovum.
