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प्रश्न
Define spermiation.
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उत्तर १
Spermiation is the process of releasing mature spermatozoa. In this, spermatozoa are shed into the lumen of the seminiferous tubule for transport.
उत्तर २
After spermiogenesis, sperm heads become embeded in sertoli cells from which they obtain their nutrition and finally get released into the lumen of seminiferous tubules. This process of release of mature sperms from sertoli cells is called spermiation.
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संबंधित प्रश्न
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 fusion of the male and the female gametes is called ______.
Define spermiogenesis.
Describe the process of oogenesis in human female.
Describe the process of spermatogenesis with the help of diagram.
Sex organs produce gametes which are diploid.
The Androgen Binding Protein (ABP) is produced by ____________.
Define gametogenesis.
Expand the acronym.
LH
During spermatogenesis, spermatogonium grows in size to become ______.
Which of the following are known as the nourishing cells present in the seminiferous tubules?
The part labelled as ______ contains the energy source that facilitates sperm motility.
Identify the longest period of menstrual cycle.
How many autosomes does a human primary spermatocyte have?
Acrosome reaction in sperm is triggered by ______.
By which process sperms released from the seminiferous tubules?
It The cell division in secondary oocyte is suspended at ______.
At the time of organogenesis, genes regulate the process at different levels and at different time due to ______.
The nutritive cells found in seminiferous tubules are ______.
In spermatogenesis, reduction division of chromosome occurs during conversion of ______.
1st polar body is formed at which stage of oogenesis?
In oogenesis haploid egg is fertilised by sperm at which stage?
Penetration of the sperm in the ovum is followed by ______
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?
Observe the given figure and answer the questions that follow.
- Label A and B.
- Identify the process.
- What happens during this process and what is 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:
The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n = 50 shall be:
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?
