286442
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(NCERT)
286443
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.
NCERT Page-48 / N-32
Human Reproduction(NCERT)
286446
First polar body is formed during the formation of ______and_____completion of meiotic division.
1 Primary oocytes, II
2 Secondary oocytes, 1
3 Secondary spermatocytes, II
4 Primary spermatocytes, I
Explanation:
(b) First polar body is formed during the formation of secondary oocytes and completion of Ist meiotic division. In humans, the secondary oocytes are produced when the primary oocytes complete meiosis I.
NCERT Page-49 / N-33
Human Reproduction(NCERT)
286447
Second meiotic division in secondary oocyte results in the formation of
1 first polar body and a diploid ovum.
2 first polar body and a haploid ovum.
3 second polar body and a diploid ovum.
4 second polar body and a haploid ovum
Explanation:
(d) Second meiotic division in secondary oocyte results in the formation of a second polar body & a haploid ovum (ootid).
286442
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(NCERT)
286443
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.
NCERT Page-48 / N-32
Human Reproduction(NCERT)
286446
First polar body is formed during the formation of ______and_____completion of meiotic division.
1 Primary oocytes, II
2 Secondary oocytes, 1
3 Secondary spermatocytes, II
4 Primary spermatocytes, I
Explanation:
(b) First polar body is formed during the formation of secondary oocytes and completion of Ist meiotic division. In humans, the secondary oocytes are produced when the primary oocytes complete meiosis I.
NCERT Page-49 / N-33
Human Reproduction(NCERT)
286447
Second meiotic division in secondary oocyte results in the formation of
1 first polar body and a diploid ovum.
2 first polar body and a haploid ovum.
3 second polar body and a diploid ovum.
4 second polar body and a haploid ovum
Explanation:
(d) Second meiotic division in secondary oocyte results in the formation of a second polar body & a haploid ovum (ootid).
286442
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(NCERT)
286443
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.
NCERT Page-48 / N-32
Human Reproduction(NCERT)
286446
First polar body is formed during the formation of ______and_____completion of meiotic division.
1 Primary oocytes, II
2 Secondary oocytes, 1
3 Secondary spermatocytes, II
4 Primary spermatocytes, I
Explanation:
(b) First polar body is formed during the formation of secondary oocytes and completion of Ist meiotic division. In humans, the secondary oocytes are produced when the primary oocytes complete meiosis I.
NCERT Page-49 / N-33
Human Reproduction(NCERT)
286447
Second meiotic division in secondary oocyte results in the formation of
1 first polar body and a diploid ovum.
2 first polar body and a haploid ovum.
3 second polar body and a diploid ovum.
4 second polar body and a haploid ovum
Explanation:
(d) Second meiotic division in secondary oocyte results in the formation of a second polar body & a haploid ovum (ootid).
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Human Reproduction(NCERT)
286442
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(NCERT)
286443
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.
NCERT Page-48 / N-32
Human Reproduction(NCERT)
286446
First polar body is formed during the formation of ______and_____completion of meiotic division.
1 Primary oocytes, II
2 Secondary oocytes, 1
3 Secondary spermatocytes, II
4 Primary spermatocytes, I
Explanation:
(b) First polar body is formed during the formation of secondary oocytes and completion of Ist meiotic division. In humans, the secondary oocytes are produced when the primary oocytes complete meiosis I.
NCERT Page-49 / N-33
Human Reproduction(NCERT)
286447
Second meiotic division in secondary oocyte results in the formation of
1 first polar body and a diploid ovum.
2 first polar body and a haploid ovum.
3 second polar body and a diploid ovum.
4 second polar body and a haploid ovum
Explanation:
(d) Second meiotic division in secondary oocyte results in the formation of a second polar body & a haploid ovum (ootid).
