272041
Which of the following group of cells involved in spermatogenesis represent haploid cells?
1 Spermatogonium
2 Primary spermatocyte
3 Both (a.)and (b.)
4 Secondary spermatocyte
Explanation:
(d) Secondary spermatocytes are the result of meiotic division, so they are the haploid ones.
NCERT Page-47 / N-31
Human Reproduction
272042
Select the option which shows the correct part of a sperm with its corresponding function.
1 Head: Stimulate Leydig cells to produce androgen hormone.
2 Neck: Essential for maturation and motility of sperm.
3 Middle piece: Produces energy from mitochondria for tail movement which facilitate sperm motility.
4 Tail: Help in fertilization with the help of enzyme present in acrosome.
Explanation:
(c)
NCERT Page-48 / N-32
Human Reproduction
272043
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
272044
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).
272041
Which of the following group of cells involved in spermatogenesis represent haploid cells?
1 Spermatogonium
2 Primary spermatocyte
3 Both (a.)and (b.)
4 Secondary spermatocyte
Explanation:
(d) Secondary spermatocytes are the result of meiotic division, so they are the haploid ones.
NCERT Page-47 / N-31
Human Reproduction
272042
Select the option which shows the correct part of a sperm with its corresponding function.
1 Head: Stimulate Leydig cells to produce androgen hormone.
2 Neck: Essential for maturation and motility of sperm.
3 Middle piece: Produces energy from mitochondria for tail movement which facilitate sperm motility.
4 Tail: Help in fertilization with the help of enzyme present in acrosome.
Explanation:
(c)
NCERT Page-48 / N-32
Human Reproduction
272043
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
272044
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).
272041
Which of the following group of cells involved in spermatogenesis represent haploid cells?
1 Spermatogonium
2 Primary spermatocyte
3 Both (a.)and (b.)
4 Secondary spermatocyte
Explanation:
(d) Secondary spermatocytes are the result of meiotic division, so they are the haploid ones.
NCERT Page-47 / N-31
Human Reproduction
272042
Select the option which shows the correct part of a sperm with its corresponding function.
1 Head: Stimulate Leydig cells to produce androgen hormone.
2 Neck: Essential for maturation and motility of sperm.
3 Middle piece: Produces energy from mitochondria for tail movement which facilitate sperm motility.
4 Tail: Help in fertilization with the help of enzyme present in acrosome.
Explanation:
(c)
NCERT Page-48 / N-32
Human Reproduction
272043
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
272044
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).
272041
Which of the following group of cells involved in spermatogenesis represent haploid cells?
1 Spermatogonium
2 Primary spermatocyte
3 Both (a.)and (b.)
4 Secondary spermatocyte
Explanation:
(d) Secondary spermatocytes are the result of meiotic division, so they are the haploid ones.
NCERT Page-47 / N-31
Human Reproduction
272042
Select the option which shows the correct part of a sperm with its corresponding function.
1 Head: Stimulate Leydig cells to produce androgen hormone.
2 Neck: Essential for maturation and motility of sperm.
3 Middle piece: Produces energy from mitochondria for tail movement which facilitate sperm motility.
4 Tail: Help in fertilization with the help of enzyme present in acrosome.
Explanation:
(c)
NCERT Page-48 / N-32
Human Reproduction
272043
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
272044
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).
