272037
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
272038
The mobility of a mature sperm is controlled by the mitochondria located in the
1 Head
2 Middle piece
3 Tall
4 In all of them
Explanation:
(b) cytoplasm and organelles.
NCERT Page-48 / N-32
Human Reproduction
272039
Each spermatogonium which is diploid contains how many chromosomes?
1 23
2 26
3 46
4 48
Explanation:
(c) Each human somatic cell is diploid with a set of pair of 23 chromosomes, so the total number of chromosomes is 46 . Spermatogonia are also diploid in nature having 46 chromosomes.
NCERT Page 49
Human Reproduction
272040
The acrosome enables the sperm to
1 help in motility.
2 produce energy for activity.
3 penetrate vitelline membrane of ovum.
4 fertilize more than one ovum.
Explanation:
(c) The acrosome (head of the sperm) contains the necessary enzymes (hyaluronidase and acrosin) to penetrate the membrane of the ovum.
272037
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
272038
The mobility of a mature sperm is controlled by the mitochondria located in the
1 Head
2 Middle piece
3 Tall
4 In all of them
Explanation:
(b) cytoplasm and organelles.
NCERT Page-48 / N-32
Human Reproduction
272039
Each spermatogonium which is diploid contains how many chromosomes?
1 23
2 26
3 46
4 48
Explanation:
(c) Each human somatic cell is diploid with a set of pair of 23 chromosomes, so the total number of chromosomes is 46 . Spermatogonia are also diploid in nature having 46 chromosomes.
NCERT Page 49
Human Reproduction
272040
The acrosome enables the sperm to
1 help in motility.
2 produce energy for activity.
3 penetrate vitelline membrane of ovum.
4 fertilize more than one ovum.
Explanation:
(c) The acrosome (head of the sperm) contains the necessary enzymes (hyaluronidase and acrosin) to penetrate the membrane of the ovum.
272037
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
272038
The mobility of a mature sperm is controlled by the mitochondria located in the
1 Head
2 Middle piece
3 Tall
4 In all of them
Explanation:
(b) cytoplasm and organelles.
NCERT Page-48 / N-32
Human Reproduction
272039
Each spermatogonium which is diploid contains how many chromosomes?
1 23
2 26
3 46
4 48
Explanation:
(c) Each human somatic cell is diploid with a set of pair of 23 chromosomes, so the total number of chromosomes is 46 . Spermatogonia are also diploid in nature having 46 chromosomes.
NCERT Page 49
Human Reproduction
272040
The acrosome enables the sperm to
1 help in motility.
2 produce energy for activity.
3 penetrate vitelline membrane of ovum.
4 fertilize more than one ovum.
Explanation:
(c) The acrosome (head of the sperm) contains the necessary enzymes (hyaluronidase and acrosin) to penetrate the membrane of the ovum.
272037
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
272038
The mobility of a mature sperm is controlled by the mitochondria located in the
1 Head
2 Middle piece
3 Tall
4 In all of them
Explanation:
(b) cytoplasm and organelles.
NCERT Page-48 / N-32
Human Reproduction
272039
Each spermatogonium which is diploid contains how many chromosomes?
1 23
2 26
3 46
4 48
Explanation:
(c) Each human somatic cell is diploid with a set of pair of 23 chromosomes, so the total number of chromosomes is 46 . Spermatogonia are also diploid in nature having 46 chromosomes.
NCERT Page 49
Human Reproduction
272040
The acrosome enables the sperm to
1 help in motility.
2 produce energy for activity.
3 penetrate vitelline membrane of ovum.
4 fertilize more than one ovum.
Explanation:
(c) The acrosome (head of the sperm) contains the necessary enzymes (hyaluronidase and acrosin) to penetrate the membrane of the ovum.
