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प्रश्न
Draw a labelled diagram of sperm.
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उत्तर १
उत्तर २
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संबंधित प्रश्न
Give the name and function for ‘A’ and ‘B’ from the diagram given below
With the help of diagrammatic representation, explain the process of gametogenesis
Draw a diagram of the microscopic structure of human sperm. Label the following parts in it and write their functions:
- Acrosome
- Nucleus
- Middle piece
The process of release of the ovum from a mature follicle is called ______.
Identify True/False statement. Correct the false statement to make it true.
Oogenesis takes place in the corpus luteum.
Describe the process of budding in hydra.
In case of sexual reproduction, newborn show similarities about characters. Explain this statement with suitable examples.
In angiosperms, the pollen germinates to produce a pollen tube that carries two gametes. What is the purpose of carrying two gametes when a single gamete can fertilize the egg?
If one pollen grain produces two male gametes, how many pollen grains are needed to fertilize 10 ovules?
The male sex hormone testosterone is secreted from ____________.
The part labelled as ______ contains the energy source that facilitates sperm motility.
In human beings, the largest cell formed during Oogenesis is ______
How many autosomes does a human primary spermatocyte have?
Acrosome reaction in sperm is triggered by ______.
Sertoli cells are found in ______.
How many functional sperms and how many ova will be formed by a primary spermatocyte and a primary oocyte.
At the time of organogenesis, genes regulate the process at different levels and at different time due to ______.
The process of release of spermatozoa from Sertoli cells into cavity of the seminiferous tubules is called ______.
1st polar body is formed at which stage of oogenesis?
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?
Sperms can be stored for several years in liquid nitrogen with a temperature of ______.
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.
What is the difference between a primary oocyte and a secondary oocyte?
Sketch and label the process of oogenesis.
Draw a labelled diagram of a section through the ovary.
At the onset of puberty, gonadotropin releasing hormone is secreted by ______.
