Human Reproduction · Question 32

Meiotic division of the secondary oocyte is completed

1. At the time of fusion of a sperm with an ovum
2. At the time of copulation
3. Prior to ovulation
4. After zygote formation

Which of the following hormone levels will cause release of ovum (ovulation) from the Graafian follicle?

1. Low concentration of FSH
2. High concentration of Progesterone
3. Low concentration of LH
4. High concentration of Estrogen

Match the following columns and select the correct option.

1. (A)-(ii), (B)-(iii), (C)-(iv), (D)-(i)
2. (A)-(i), (B)-(iv), (C)-(ii), (D)-(iii)
3. (A)-(iv), (B)-(iii), (C)-(i), (D)-(ii)
4. (A)-(iii), (B)-(ii), (C)-(iv), (D)-(i)

Extrusion of second polar body from egg nucleus occurs :

1. Before entry of sperm into ovum
2. Simultaneously with first cleavage
3. After entry of sperm but before fertilization
4. After fertilization

Select the correct sequence for transport of sperm cells in male reproductive system :

1. Seminiferous tubules Vasa efferentia Epididymis Inguinal canal Urethra
2. Testis Epididymis Vasa efferentia Vas deferens Ejaculatory duct Inguinal canal Urethra Urethral meatus
3. Testis Epididymis Vasa efferentia Rete testis Inguinal canal Urethra
4. Seminiferous tubules Rete testis Vasa efferentia Epididymis Vas deferens Ejaculatory duct Urethra Urethral meatus

Hormones secreted by the placenta to maintain pregnancy are

1. hCG, hPL, progestogens, prolactin
2. hCG, hPL, estrogens, relaxin, oxytocin
3. hCG, hPL, progestogens, estrogens
4. hCG, progestogens, estrogens, glucocorticoids

The difference between spermiogenesis and spermiation is

1. in spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed
2. in spermiogenesis spermatozoa are formed, while in spermiation spermatids are formed
3. in spermiogenesis spermatozoa from Sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed
4. in spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules

The amnion of mammalian embryo is derived from

1. ectoderm and mesoderm
2. endoderm and mesoderm
3. mesoderm and trophoblast
4. ectoderm and endoderm

Match the items given in column I with those in column II and select the correct option given below.

1. (a)-(i), (b)-(ii), (c)-(iii)
2. (a)-(i), (b)-(iii), (c)-(ii)
3. (a)-(ii), (b)-(iii), (c)-(i)
4. (a)-(iii), (b)-(i), (c)-(ii)

A temporary endocrine gland in the human body is

1. corpus cardiacum
2. corpus luteum
3. corpus allatum
4. pineal gland.