286438
In humans, male germs cells differentiate into the end of first meiotic division.
1 spermatid
2 spermatogonium
3 secondary spermatocyte
4 primary spermatocyte
Explanation:
(c) Each primary spermatocyte duplicates its DNA and subsequently undergoes meiosis I to produce two equal, haploid secondary spermatocytes. Each of the two secondary spermatocytes further undergoes meiosis II to produce two haploid spermatids. Therefore, total four equal, haploid spermatids are producted after second meiotic division.
NCERT Page-49 / N-31
Human Reproduction(NCERT)
286439
Increased secretion of which hormone start the process of sperm formation at the time of puberty?
1 $\text{GH}$
2 TSH
3 PRL
4 $\text{GnRH}$
Explanation:
(d) Gonadotropin-releasing hormone (GnRH) is released from the anterior pituitary. $\text{GnRH}$ activity is very low during childhood, and is activated at puberty or adolescence. At the puberty increased secretion of $\text{GnRH}$ start the process of sperm formation.
NCERT Page-47 / N-31
Human Reproduction(NCERT)
286440
By which process sperms released from the seminiferous tubules?
1 Spermiation
2 Insemination
3 Spermatogenesis
4 Spermiogenesis
Explanation:
(a) The mature spermatozoa are released from the protective sertoli cells into the lumen of the seminiferous tubule and a process called spermiation then takes place, which removes the remaining unnecessary
NCERT Page-47 / N-31
Human Reproduction(NCERT)
286441
The mobility of a mature sperm is controlled by the mitochondria located in the
286438
In humans, male germs cells differentiate into the end of first meiotic division.
1 spermatid
2 spermatogonium
3 secondary spermatocyte
4 primary spermatocyte
Explanation:
(c) Each primary spermatocyte duplicates its DNA and subsequently undergoes meiosis I to produce two equal, haploid secondary spermatocytes. Each of the two secondary spermatocytes further undergoes meiosis II to produce two haploid spermatids. Therefore, total four equal, haploid spermatids are producted after second meiotic division.
NCERT Page-49 / N-31
Human Reproduction(NCERT)
286439
Increased secretion of which hormone start the process of sperm formation at the time of puberty?
1 $\text{GH}$
2 TSH
3 PRL
4 $\text{GnRH}$
Explanation:
(d) Gonadotropin-releasing hormone (GnRH) is released from the anterior pituitary. $\text{GnRH}$ activity is very low during childhood, and is activated at puberty or adolescence. At the puberty increased secretion of $\text{GnRH}$ start the process of sperm formation.
NCERT Page-47 / N-31
Human Reproduction(NCERT)
286440
By which process sperms released from the seminiferous tubules?
1 Spermiation
2 Insemination
3 Spermatogenesis
4 Spermiogenesis
Explanation:
(a) The mature spermatozoa are released from the protective sertoli cells into the lumen of the seminiferous tubule and a process called spermiation then takes place, which removes the remaining unnecessary
NCERT Page-47 / N-31
Human Reproduction(NCERT)
286441
The mobility of a mature sperm is controlled by the mitochondria located in the
286438
In humans, male germs cells differentiate into the end of first meiotic division.
1 spermatid
2 spermatogonium
3 secondary spermatocyte
4 primary spermatocyte
Explanation:
(c) Each primary spermatocyte duplicates its DNA and subsequently undergoes meiosis I to produce two equal, haploid secondary spermatocytes. Each of the two secondary spermatocytes further undergoes meiosis II to produce two haploid spermatids. Therefore, total four equal, haploid spermatids are producted after second meiotic division.
NCERT Page-49 / N-31
Human Reproduction(NCERT)
286439
Increased secretion of which hormone start the process of sperm formation at the time of puberty?
1 $\text{GH}$
2 TSH
3 PRL
4 $\text{GnRH}$
Explanation:
(d) Gonadotropin-releasing hormone (GnRH) is released from the anterior pituitary. $\text{GnRH}$ activity is very low during childhood, and is activated at puberty or adolescence. At the puberty increased secretion of $\text{GnRH}$ start the process of sperm formation.
NCERT Page-47 / N-31
Human Reproduction(NCERT)
286440
By which process sperms released from the seminiferous tubules?
1 Spermiation
2 Insemination
3 Spermatogenesis
4 Spermiogenesis
Explanation:
(a) The mature spermatozoa are released from the protective sertoli cells into the lumen of the seminiferous tubule and a process called spermiation then takes place, which removes the remaining unnecessary
NCERT Page-47 / N-31
Human Reproduction(NCERT)
286441
The mobility of a mature sperm is controlled by the mitochondria located in the
286438
In humans, male germs cells differentiate into the end of first meiotic division.
1 spermatid
2 spermatogonium
3 secondary spermatocyte
4 primary spermatocyte
Explanation:
(c) Each primary spermatocyte duplicates its DNA and subsequently undergoes meiosis I to produce two equal, haploid secondary spermatocytes. Each of the two secondary spermatocytes further undergoes meiosis II to produce two haploid spermatids. Therefore, total four equal, haploid spermatids are producted after second meiotic division.
NCERT Page-49 / N-31
Human Reproduction(NCERT)
286439
Increased secretion of which hormone start the process of sperm formation at the time of puberty?
1 $\text{GH}$
2 TSH
3 PRL
4 $\text{GnRH}$
Explanation:
(d) Gonadotropin-releasing hormone (GnRH) is released from the anterior pituitary. $\text{GnRH}$ activity is very low during childhood, and is activated at puberty or adolescence. At the puberty increased secretion of $\text{GnRH}$ start the process of sperm formation.
NCERT Page-47 / N-31
Human Reproduction(NCERT)
286440
By which process sperms released from the seminiferous tubules?
1 Spermiation
2 Insemination
3 Spermatogenesis
4 Spermiogenesis
Explanation:
(a) The mature spermatozoa are released from the protective sertoli cells into the lumen of the seminiferous tubule and a process called spermiation then takes place, which removes the remaining unnecessary
NCERT Page-47 / N-31
Human Reproduction(NCERT)
286441
The mobility of a mature sperm is controlled by the mitochondria located in the
