(i) When does oogenesis begin? (ii) Differentiate between the location and function of Sertoli cells and Leydig cells. -Biology

(i) When does oogenesis begin? (ii) Differentiate between the location and function of Sertoli cells and Leydig cells. -Biology
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Oogenesis begins during the embryonic development stage when a million gamete mother cells (oogonia) are formed within each foetal ovary. (ii) (a) Sertoli cells are located on the inside lining of seminiferous tubule. These cells provide nutrition to the germ cells. (b) Leydig cells or interstitial cells are located in the regions outside the seminiferous tubule called interstitial spaces. These cells synthesise and secrete testicular hormone called androgens.
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Related questions

(i) Write the specific location and the functions of the following cells in human males Leydig cells Sertoli cells Primary spermatocyte (ii) Explain the role of any two accessory glands in human male reproductive system. -Biology

Description : (i) Write the specific location and the functions of the following cells in human males Leydig cells Sertoli cells Primary spermatocyte (ii) Explain the role of any two accessory glands in human male reproductive system. -Biology

Last Answer : I)Oogenesis begins during the embryonic development stage when a million gamete mother cells (oogonia) are formed within each foetal ovary. (ii) (a) Sertoli cells are located on the inside ... provide nutrition to sperms. (b) Bulbourethral glands Their secretion helps in the lubrication of penis.

Androgens are synthesised in (A) Leydig cells in testes (B) Sertoli cells in testes (C) Seminiferous tubules (D) Prostate gland

Description : Androgens are synthesised in (A) Leydig cells in testes (B) Sertoli cells in testes (C) Seminiferous tubules (D) Prostate gland

Last Answer : Answer : A

In males, luteinising hormone acts on (A) Leydig cells (B) Sertoli cells (C) Prostate gland (D) All of these

Description : In males, luteinising hormone acts on (A) Leydig cells (B) Sertoli cells (C) Prostate gland (D) All of these

Last Answer : Answer : A

Androgens are produced by (A) Cells of sertoli (B) Leydig cells (C) Rete testis (D) Efferent ductules

Description : Androgens are produced by (A) Cells of sertoli (B) Leydig cells (C) Rete testis (D) Efferent ductules

Last Answer : Answer : B

Select the incorrect statement. (a) LH and FSH decrease gradually during the follicular phase. (b) LH triggers secretion of androgens from the Leydig cells. (c) FSH stimulates the Sertoli cells which help in spermiogenesis. (d) LH triggers ovulation in ovary.

Description : Select the incorrect statement. (a) LH and FSH decrease gradually during the follicular phase. (b) LH triggers secretion of androgens from the Leydig cells. (c) FSH stimulates the Sertoli cells which help in spermiogenesis. (d) LH triggers ovulation in ovary.

Last Answer : (a) LH and FSH decrease gradually during the follicular phase.

Male hormone is produced in the testis by cells of (a) Sertoli (b) epithelial (c) spermatocytes (d) Leydig.

Description : Male hormone is produced in the testis by cells of (a) Sertoli (b) epithelial (c) spermatocytes (d) Leydig.

Last Answer : (d) Leydig.

Sertoli-Leydig cell tumor?

Description : Sertoli-Leydig cell tumor?

Last Answer : DefinitionSertoli-Leydig cell tumor is a rare cancer of the ovaries. The cancer cells produce and release a male sex hormone.Alternative NamesArrhenoblastoma; AndroblastomaSymptomsThe Sertoli cells are ... develop male physical characteristics (virilization), including facial hair and a deep voice.

6.Find the odd one out. (a)spermatid, b)sertoli cell, c)polar body, d)Leydig cell )

Description : 6.Find the odd one out. (a)spermatid, b)sertoli cell, c)polar body, d)Leydig cell )

Last Answer : c)polar body,

WRITE THE LOCATION AND FUNCTION OF SERTOLI CELLS IN HUMANS.

Description : WRITE THE LOCATION AND FUNCTION OF SERTOLI CELLS IN HUMANS.

Last Answer : ANS. IN THE SEMINIFEROUS TUBULES OF TESTIS, NOURISHES DEVELOPING SPERMS.

DESCRIBE THE PROCESS OF OOGENESIS IN HUMAN FEMALE AND DIFFERENTIATE IT WITH SPERMATOGENESIS ON THE BASIS OF TIME OF INITIATION AND THE PRODUCTS FORMED.

Description : DESCRIBE THE PROCESS OF OOGENESIS IN HUMAN FEMALE AND DIFFERENTIATE IT WITH SPERMATOGENESIS ON THE BASIS OF TIME OF INITIATION AND THE PRODUCTS FORMED.

Last Answer : ANS. OOGENESIS : DIAGRAMMATIC REPRESENTATION AS GIVEN IN NCERT. DIFFERENCES BETWEEN : OOGENESIS SPERMATOGENESIS (i) STARTS DURING FOETAL LIFE (i) STARTS DURING PUBERTY (ii)PRODUCTS: OVUM (ii) SPERMS

Match the following columns and select the correct option. Column-I Column-II (A) Placenta (i) Androgens (B) Zona pellucida (ii) Human Chorionic Gonadotropin (HCG) (C) Bulbourethral glands (iii) Layer of the ovum (D) Leydig cells (iv) Lubrication of the penis (A) (B) (C) (D) (a) (iv) (iii) (i) (ii) (b) (i) (iv) (ii) (iii) (c) (iii) (ii) (iv) (i) (d) (ii) (iii) (iv) (i)

Description : Match the following columns and select the correct option. Column-I Column-II (A) Placenta (i) Androgens (B) Zona pellucida (ii) Human Chorionic Gonadotropin (HCG) (C) Bulbourethral glands (iii) Layer of the ovum (D) Leydig cells (iv) ... (ii) (iii) (c) (iii) (ii) (iv) (i) (d) (ii) (iii) (iv) (i)

Last Answer : (d) (ii) (iii) (iv) (i)

Draw a diagrammatic sectional view of human ovary showing different stages of oogenesis along with corpus luteum. (ii) Where is morula formed in human? Explain the process of its development from zygote. -Biology

Description : Draw a diagrammatic sectional view of human ovary showing different stages of oogenesis along with corpus luteum. (ii) Where is morula formed in human? Explain the process of its development from zygote. -Biology

Last Answer : (i) Sectional view of human ovary. (ii) Morula is formed in the (a)Isthmus of the oviduct (Fallopiantube). (b)The zygote undergoes mitotic divisions in quick succession called cleavage, forming 2, 4 ... 8-16 blastomeres is called a morula and the inner cell mass gets ready to form the embryo proper.

Which of the following control the function Sertoli cells?

Description : Which of the following control the function Sertoli cells?

Last Answer : Which of the following control the function Sertoli cells? A. Estrogen B. FSH C. Testerone D. ACTH.

Cells of Leydig occur in

Description : Cells of Leydig occur in

Last Answer : Cells of Leydig occur in A. Liver B. Ovary C. Testis D. Spleen

The Leydig cells as found in the human body are the secretory source of (1) Androgens (2) Progesterone (3) Intestinal mucus (4) Glucagon

Description : The Leydig cells as found in the human body are the secretory source of (1) Androgens (2) Progesterone (3) Intestinal mucus (4) Glucagon

Last Answer : (1) Androgens

The Leydig cells as found in the human body are the secretory source of: a) Intestinal mucus b) Glucagon c) Androgens d) Progesterone

Description : The Leydig cells as found in the human body are the secretory source of: a) Intestinal mucus b) Glucagon c) Androgens d) Progesterone

Last Answer : c) Androgens

Assertion : During oogenesis polar bodies are formed . Reason : Primary function of formation of polarbodies is to bring haploidy of ovum .

Description : Assertion : During oogenesis polar bodies are formed . Reason : Primary function of formation of polarbodies is to bring haploidy of ovum .

Last Answer : Assertion : During oogenesis polar bodies are formed . Reason : Primary function of formation of ... . If both Assertion & Reason are False.

The hormone which acts on Sertoli cells and stimulates the process of spermaogenesis is :

Description : The hormone which acts on Sertoli cells and stimulates the process of spermaogenesis is :

Last Answer : The hormone which acts on Sertoli cells and stimulates the process of spermaogenesis is : A. LH B. FSH C. Androgen D. GnRH.

In mammals, Sertoli cells occur in

Description : In mammals, Sertoli cells occur in

Last Answer : In mammals, Sertoli cells occur in A. Germinal epithelium of testis B. Germinal epithelium of ovary C. Medulls of kidney D. Adrenal cortex.

Sertoli cells occur in

Description : Sertoli cells occur in

Last Answer : Sertoli cells occur in A. Adrenal cortex and secrete adrenaline B. Seminiferous tubules and ... choleystokinus D. Ovarises and secrete progesterone.

Sertoli cells secrete a hormone

Description : Sertoli cells secrete a hormone

Last Answer : Sertoli cells secrete a hormone A. Gonadotropin B. Testerone C. Relaxin D. Inhibin.

Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous tubules lined with male germ cells and sertoli ce

Description : Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous tubules lined with male germ cells and sertoli ce

Last Answer : Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous ... . If both Assertion & Reason are False.

Sertoli cells are involved in :-

Description : Sertoli cells are involved in :-

Last Answer : Sertoli cells are involved in :- A. Respiration B. Nutrition of sperms C. Excretion D. Development of sex organs

Sertoli cells are regulated by the pituitary hormone known as

Description : Sertoli cells are regulated by the pituitary hormone known as

Last Answer : Sertoli cells are regulated by the pituitary hormone known as A. FSH B. GH C. Prolactin D. LH

Sertoli cells occur in

Description : Sertoli cells occur in

Last Answer : Sertoli cells occur in A. human testis B. frog testis C. human ovary D. frog ovary

Sertoli cells are found in

Description : Sertoli cells are found in

Last Answer : Sertoli cells are found in A. testis of cockroach B. liver of mammals C. testis of mammals D. testis of frog

Sertoli cells are regulated by the pituitary hormone known as

Description : Sertoli cells are regulated by the pituitary hormone known as

Last Answer : Sertoli cells are regulated by the pituitary hormone known as A. Prolactin B. LH C. FSH D. GH

All the following statements about FSH are true except (A) It is a tropic hormone secreted by anterior pituitary (B) Its secretion is increased by gonadotropin releasing hormone (C) It acts on Sertoli cells (D) It increases the synthesis of testosterone

Description : All the following statements about FSH are true except (A) It is a tropic hormone secreted by anterior pituitary (B) Its secretion is increased by gonadotropin releasing hormone (C) It acts on Sertoli cells (D) It increases the synthesis of testosterone

Last Answer : Answer : D

'Barr body' is found in - (1) Sperm (2) Sertoli cells (3) Female somatic cells (4) Male somatic cells

Description : 'Barr body' is found in - (1) Sperm (2) Sertoli cells (3) Female somatic cells (4) Male somatic cells

Last Answer : (3) Female somatic cells Explanation: A Barr body is the inactive X chromosome in a female somatic cell in those species in which sex is determined by the presence of the Y or W chromosome rather ... typical human female has only one Barr body per somatic cell, while a typical human male has none.

Sertoli cells are regulated by the pituitary hormone known as (a) LH (b) FSH (c) GH (d) prolactin

Description : Sertoli cells are regulated by the pituitary hormone known as (a) LH (b) FSH (c) GH (d) prolactin

Last Answer : FSH

The difference between spermiogenesis and spermiation is (a) in spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed (b) in spermiogenesis spermatozoa are formed, while in spermiation spermatids are formed (c) in spermiogenesis spermatozoa from Sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed (d) in spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules

Description : The difference between spermiogenesis and spermiation is (a) in spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed (b) in spermiogenesis spermatozoa are formed, ... in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules

Last Answer : (d) in spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules.

Sertoli cells are found in (a) ovaries and secrete progesterone (b) adrenal cortex and secrete adrenaline (c) seminiferous tubules and provide nutrition to germ cells (d) pancreas and secrete cholecystokinin.

Description : Sertoli cells are found in (a) ovaries and secrete progesterone (b) adrenal cortex and secrete adrenaline (c) seminiferous tubules and provide nutrition to germ cells (d) pancreas and secrete cholecystokinin.

Last Answer : (c) seminiferous tubules and provide nutrition to germ cells

Testosterone is produced by (a) sertoli cells (b) Leydig’s cells (c) oxyntic cells (d) pituitary gland.

Description : Testosterone is produced by (a) sertoli cells (b) Leydig’s cells (c) oxyntic cells (d) pituitary gland.

Last Answer : (b) Leydig’s cells

.Which one of the following cells, found in testes of rabbit, secretes male hormone? (a) Epithelial cells (b) Spermatocytes (c) Leydig’s cell (d) Sertoli cells

Description : .Which one of the following cells, found in testes of rabbit, secretes male hormone? (a) Epithelial cells (b) Spermatocytes (c) Leydig’s cell (d) Sertoli cells

Last Answer : (c) Leydig’s cell

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.

Description : 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, ... in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules.

Last Answer : (4) In spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules.

‘Barr body’ is found in (1) Sperm (2) Sertoli cells (3) Female somatic cells (4) Male somatic cells

Description : ‘Barr body’ is found in (1) Sperm (2) Sertoli cells (3) Female somatic cells (4) Male somatic cells

Last Answer : Female somatic cells

Differentiate induced draft and forced draft cooling towers based on (i) Location of fan (ii) Corrosion of blades (iii) Efficiency (iv) Fan size

Description : Differentiate induced draft and forced draft cooling towers based on (i) Location of fan (ii) Corrosion of blades (iii) Efficiency (iv) Fan size

Last Answer : Differentiate induced draft and forced draft cooling towers based on (i) Location of fan (ii) Corrosion of blades (iii) Efficiency (iv) Fan size

What is the process of Spermatogenesis & Oogenesis -Biology

Description : What is the process of Spermatogenesis & Oogenesis -Biology

Last Answer : answer:

Oogenesis takes place in

Description : Oogenesis takes place in

Last Answer : Oogenesis takes place in A. Squamous epthelium of ovary. B. Interstitial cells of ovary C. Follicles of ovary D. Germinal epithelium of ovary.

What is the total number of polar bodies formed during oogenesis in the ovary?

Description : What is the total number of polar bodies formed during oogenesis in the ovary?

Last Answer : What is the total number of polar bodies formed during oogenesis in the ovary? A. 4 B. 3 C. 1 D. 2

The process of spermatogenesis and oogenesis in most vertebrates are under the influence of which hormone ?

Description : The process of spermatogenesis and oogenesis in most vertebrates are under the influence of which hormone ?

Last Answer : The process of spermatogenesis and oogenesis in most vertebrates are under the influence of which hormone ? A. Oxytocin B. FSH C. ACTH D. ICSH

First meiotic division during Oogenesis occurs in:

Description : First meiotic division during Oogenesis occurs in:

Last Answer : First meiotic division during Oogenesis occurs in: A. First polar body B. Second polar body C. Primary oocytes D. Secondary polar body

How many polar bodies are produced during the entire process of oogenesis in unmarried human female ?

Description : How many polar bodies are produced during the entire process of oogenesis in unmarried human female ?

Last Answer : How many polar bodies are produced during the entire process of oogenesis in unmarried human female ? A. Three B. Two C. One D. Four

10 oogonia yield 10 primary oocytes , then how many ova are produced on completion of oogenesis

Description : 10 oogonia yield 10 primary oocytes , then how many ova are produced on completion of oogenesis

Last Answer : 10 oogonia yield 10 primary oocytes , then how many ova are produced on completion of oogenesis A. 5 B. 10 C. 20 D. 40

Development of an egg without - fertilization is called (1) Gametogenesis (2) Parthenogenesis (3) Oogenesis (4) Metamorphosis

Description : Development of an egg without - fertilization is called (1) Gametogenesis (2) Parthenogenesis (3) Oogenesis (4) Metamorphosis

Last Answer : (2) Parthenogenesis Explanation: Parthenogenesis is a form of asexual reproduction in which growth and development of embryos occur without fertilization. In plants, parthenogenesis means development of an embryo from an unfertilized edd call.

What is the work of progesterone which is present in oral contraceptive pills? (a) To inhibit ovulation (b) To check oogenesis (c) To check entry of sperms into cervix and to make them inactive (d) To check sexual behaviour

Description : What is the work of progesterone which is present in oral contraceptive pills? (a) To inhibit ovulation (b) To check oogenesis (c) To check entry of sperms into cervix and to make them inactive (d) To check sexual behaviour

Last Answer : (a) To inhibit ovulation

WHEN DO THE OOGENESIS AND THE SPERMATOGENESIS INITIATE IN HUMAN FEMALES AND MALES RESPECTIVELY ?

Description : WHEN DO THE OOGENESIS AND THE SPERMATOGENESIS INITIATE IN HUMAN FEMALES AND MALES RESPECTIVELY ?

Last Answer : ANS. OOGENESIS AT THE FOETAL LIFEAND SPERMATOGENISIS STARTS AT PUBERTY.

Development of an egg without fertilization is called (1) Gametogenesis (2) Parthenogenesis (3) Oogenesis (4) Metamorphosis

Description : Development of an egg without fertilization is called (1) Gametogenesis (2) Parthenogenesis (3) Oogenesis (4) Metamorphosis

Last Answer : Parthenogenesis

What is sertoli cell? -Biology

Description : What is sertoli cell? -Biology

Last Answer : answer:

What is sertoli cell? -Biology

Description : What is sertoli cell? -Biology

Last Answer : answer: