Assertion : Menarche starts around the age of puberty . Reason : After birth oocyte is matured and developed to form Graafian follicle .

Assertion : Menarche starts around the age of puberty . Reason : After birth oocyte is matured and developed to form Graafian follicle .
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Assertion : Menarche starts around the age of puberty . Reason : After birth oocyte is matured and ... D. If both Assertion & Reason are False.
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Assertion : In post natal life , oocyte development occurs in mature follicle Reason : After ovulation , Graafian follicle transforms in corpus luteum

Description : Assertion : In post natal life , oocyte development occurs in mature follicle Reason : After ovulation , Graafian follicle transforms in corpus luteum

Last Answer : Assertion : In post natal life , oocyte development occurs in mature follicle Reason : After ovulation , ... D. If both Assertion & Reason are False.

Which of the following events is not associated with ovulation in human female? (a) Release of secondary oocyte (b) LH surge (c) Decrease in estradiol (d) Full development of Graafian follicle

Description : Which of the following events is not associated with ovulation in human female? (a) Release of secondary oocyte (b) LH surge (c) Decrease in estradiol (d) Full development of Graafian follicle

Last Answer : (c) Decrease in estradiol

The figure shows a section of human ovary. Select the option which gives the correct identification of either A  or  B with function/characteristic(a) B- Corpus luteum - Secretes progesterone (b) A- Tertiary follicle - Forms Graafian follicle (c) B- Corpus luteum - Secretes estrogen (d) A- Primary oocyte - It is in the prophase I of the meiotic division

Description : The figure shows a section of human ovary. Select the option which gives the correct identification of either A  or  B with function/characteristic (a) B- Corpus luteum - Secretes progesterone (b) A- ... Secretes estrogen (d) A- Primary oocyte - It is in the prophase I of the meiotic division

Last Answer : (a) B- Corpus luteum - Secretes progesterone

Assertion. Corpus luteum is produced by Graafian follicle after ovulation Reason. It secretes estrogen which is necessory to maintain pregnancy.

Description : Assertion. Corpus luteum is produced by Graafian follicle after ovulation Reason. It secretes estrogen which is necessory to maintain pregnancy.

Last Answer : Assertion. Corpus luteum is produced by Graafian follicle after ovulation Reason. It secretes estrogen which is necessory to ... A. A B. B C. C D. D

Assertion : After ovulation ruptured graafian follicle transforms into corpus luteum . Reason : Corpus luteum act as endocrine gland and it is stable

Description : Assertion : After ovulation ruptured graafian follicle transforms into corpus luteum . Reason : Corpus luteum act as endocrine gland and it is stable

Last Answer : Assertion : After ovulation ruptured graafian follicle transforms into corpus luteum . Reason : Corpus ... If both Assertion & Reason are False.

Assertion : During follicular phase , the primary follicles in the ovary grow to become a fully mature Graafian follicle . Reason : Endometrium of ute

Description : Assertion : During follicular phase , the primary follicles in the ovary grow to become a fully mature Graafian follicle . Reason : Endometrium of ute

Last Answer : Assertion : During follicular phase , the primary follicles in the ovary grow to become a fully mature ... D. If both Assertion & Reason are False.

A matured mammalian cell without nucleus is – (1) Lymphocyte (2) Erythrocyte (3) Spermatozoan (4) Oocyte

Description : A matured mammalian cell without nucleus is – (1) Lymphocyte (2) Erythrocyte (3) Spermatozoan (4) Oocyte

Last Answer : (2) Erythrocyte Explanation: Mammalian erythrocytes are unique among the vertebrates as they are nonnucleated cells in their mature form. These cells have nuclei during early phases of ... lose all other cellular organelles such as their mitochondria, Golgi apparatus and endoplasmic reticulum.

A matured mammalian cell without nucleus is (1) Lymphocyte (2) Erythrocyte (3) Spermatozoan (4) Oocyte

Description : A matured mammalian cell without nucleus is (1) Lymphocyte (2) Erythrocyte (3) Spermatozoan (4) Oocyte

Last Answer : Erythrocyte

8.The reason for increased amount of progesterone during the secretory phase of menstrual cycle is ---- ---- . ( a)Maturation of secondary follicle, b)Increased secretion of FSH, c)Regression of corpus luteum, d)Formation of corpus luteum from Graafian follicle )

Description : 8.The reason for increased amount of progesterone during the secretory phase of menstrual cycle is ---- ---- . ( a)Maturation of secondary follicle, b)Increased secretion of FSH, c)Regression of corpus luteum, d)Formation of corpus luteum from Graafian follicle )

Last Answer : d)Formation of corpus luteum from Graafian follicle

The second maturation division of the mammalian ovum occurs (a) shortly after ovulation before the ovum makes entry into the fallopian tube (b) until after the ovum has been penetrated by a sperm (c) until the nucleus of the sperm has fused with that of the ovum (d) in the Graafian follicle following the first maturation division.

Description : The second maturation division of the mammalian ovum occurs (a) shortly after ovulation before the ovum makes entry into the fallopian tube (b) until after the ovum has been penetrated by a sperm ... with that of the ovum (d) in the Graafian follicle following the first maturation division.

Last Answer : (b) until after the ovum has been penetrated by a sperm

After ovulation Graafian follicle regresses into (a) corpus artesia (b) corpus callosum (c) corpus luteum (d) corpus albicans.

Description : After ovulation Graafian follicle regresses into (a) corpus artesia (b) corpus callosum (c) corpus luteum (d) corpus albicans.

Last Answer : (c) corpus luteum

Which part of ovary in mammals acts as an endocrine gland after ovulation? (a) Stroma (b) Germinal epithelium (c) Vitelline membrane (d) Graafian follicle

Description : Which part of ovary in mammals acts as an endocrine gland after ovulation? (a) Stroma (b) Germinal epithelium (c) Vitelline membrane (d) Graafian follicle

Last Answer : (d) Graafian follicle

The cavity contained in Graafian follicle is

Description : The cavity contained in Graafian follicle is

Last Answer : The cavity contained in Graafian follicle is A. Antrum B. Centrocoel C. Blastocoel D. Archenteron.

In mammals the estrogens are secreted by the Graafian follicle from its :-

Description : In mammals the estrogens are secreted by the Graafian follicle from its :-

Last Answer : In mammals the estrogens are secreted by the Graafian follicle from its :- A. External theca B. Internal theca C. Zona pellucida D. Corona radiata

In the diagram of section of Graafian follicle , different parts are indicated by alphabets . Choose the correct combination

Description : In the diagram of section of Graafian follicle , different parts are indicated by alphabets . Choose the correct combination

Last Answer : In the diagram of section of Graafian follicle , different parts are indicated by alphabets . Choose ... cumulus oophorus , e-antrum , f-theca interna

In a Graafian follicle:

Description : In a Graafian follicle:

Last Answer : In a Graafian follicle: A. Many oocytes B. Many sperms C. A single oocyte D. Site for egg fertilisation

Match column I with column II and select the correct option using the given codes. Column I Column II A. Mons pubis (i) Embryo formation B. Antrum (ii) Sperm C. Trophectoderm (iii)Female external genitalia D. Nebenkern (iv) Graafian follicle (a) A-(iii), B-(iv), C-(ii), D-(i) (b) A-(iii), B-(iv), C-(i), D-(ii) (c) A-(iii), B-(i), C-(iv), D-(ii) (d) A-(i), B-(iv), C-(iii), D-(ii

Description : Match column I with column II and select the correct option using the given codes. Column I Column II A. Mons pubis (i) Embryo formation B. Antrum (ii) Sperm C. Trophectoderm (iii)Female external genitalia D. Nebenkern (iv) Graafian ... (i), C-(iv), D-(ii) (d) A-(i), B-(iv), C-(iii), D-(ii

Last Answer : (b) A-(iii), B-(iv), C-(i), D-(ii)

Which one of the following is the correct matching of the events occurring during menstrual cycle? (a) Proliferative phase : Rapid regeneration of myometrium and maturation of Graafian follicle (b) Secretory phase : Development of corpus luteum and increased secretion of progesterone (c) Menstruation : Breakdown of myometrium and ovum not fertilised (d) Ovulation : LH and FSH attain peak level and sharp fall in the secretion of progesterone

Description : Which one of the following is the correct matching of the events occurring during menstrual cycle? (a) Proliferative phase : Rapid regeneration of myometrium and maturation of Graafian follicle (b) ... ) Ovulation : LH and FSH attain peak level and sharp fall in the secretion of progesterone

Last Answer : (b) Secretory phase : Development of corpus luteum and increased secretion of progesterone

Lamina propria is connected with (a) acini (b) liver (c) Graafian follicle (d) intestine.

Description : Lamina propria is connected with (a) acini (b) liver (c) Graafian follicle (d) intestine.

Last Answer : intestine

Estrogens exert the following actions except: A. Cornification of vaginal epithelium B. Proliferation of endometrium C. Maturation of graafian follicle D. Anabolism

Description : Estrogens exert the following actions except: A. Cornification of vaginal epithelium B. Proliferation of endometrium C. Maturation of graafian follicle D. Anabolism

Last Answer : C. Maturation of graafian follicle

Graafian follicle transforms into corpus luteum

Description : 3. Graafian follicle transforms into corpus luteum a) In the absence of fertilisation b) to secrete estrogen c) To secrete progesterone d) for disintegration of endometrium

Last Answer : c) To secrete progesterone

Assertion : When sperm enters in egg , one polar body is released in human . Reason : At the time of ovulation eggs found in secondary Oocyte phase .

Description : Assertion : When sperm enters in egg , one polar body is released in human . Reason : At the time of ovulation eggs found in secondary Oocyte phase .

Last Answer : Assertion : When sperm enters in egg , one polar body is released in human . Reason : At the time ... False . D. If both Assertion & Reason are False.

Assertion : The level of FSH & LH attain a peak level in the middle of the menstrual cycle . Reason : The FSH & LH surge induces rupture of Graafian f

Description : Assertion : The level of FSH & LH attain a peak level in the middle of the menstrual cycle . Reason : The FSH & LH surge induces rupture of Graafian f

Last Answer : Assertion : The level of FSH & LH attain a peak level in the middle of the menstrual cycle . Reason ... . D. If both Assertion & Reason are False.

The testes normally descend into the scrotum about (a) 6 months into pregnancy (b) the time of birth (c) the age of 3 months (d) the time of puberty

Description : The testes normally descend into the scrotum about (a) 6 months into pregnancy (b) the time of birth (c) the age of 3 months (d) the time of puberty

Last Answer : Ans:(b)

The maximum number of oogonia are formed at what age of female life: a) One month intrauterine. b) Five month intrauterine. c) At birth. d) At puberty. e) At 21 years of age.

Description : The maximum number of oogonia are formed at what age of female life: a) One month intrauterine. b) Five month intrauterine. c) At birth. d) At puberty. e) At 21 years of age.

Last Answer : b) Five month intrauterine.

Menarche usually occurs at age of: a) 8 and 10 years. b) 11 and 13 years. c) 14 and 16 years. d) 17 and 18 years. e) 18 and above.

Description : Menarche usually occurs at age of: a) 8 and 10 years. b) 11 and 13 years. c) 14 and 16 years. d) 17 and 18 years. e) 18 and above.

Last Answer : b) 11 and 13 years.

At puberty woman starts producing

Description : At puberty woman starts producing

Last Answer : At puberty woman starts producing A. Sperms B. Urine C. Young ones D. ova

If mammalian ovum fails to get fertilised, which one of the following is unlikely? (a) Corpus luteum will disintegrate. (b) Progesterone secretion rapidly declines. (c) Estrogen secretion further increases. (d) Primary follicle starts developing.

Description : If mammalian ovum fails to get fertilised, which one of the following is unlikely? (a) Corpus luteum will disintegrate. (b) Progesterone secretion rapidly declines. (c) Estrogen secretion further increases. (d) Primary follicle starts developing.

Last Answer : (c) Estrogen secretion further increases.

In human females, meiosis-II is not completed until (a) uterine implantation (b) birth (c) puberty (d) fertilisation.

Description : In human females, meiosis-II is not completed until (a) uterine implantation (b) birth (c) puberty (d) fertilisation.

Last Answer : (d) fertilisation.

Assertion : The mammary glands of the female starts producing milk just after the process of parturition . Reason : High level of oxytocin induces mil

Description : Assertion : The mammary glands of the female starts producing milk just after the process of parturition . Reason : High level of oxytocin induces mil

Last Answer : Assertion : The mammary glands of the female starts producing milk just after the process of parturition ... D. If both Assertion & Reason are False.

Assertion : Sperm formation continues even in old men but formation of ovum caeses in women around the age of fifty years . Reason : Human male having

Description : Assertion : Sperm formation continues even in old men but formation of ovum caeses in women around the age of fifty years . Reason : Human male having

Last Answer : Assertion : Sperm formation continues even in old men but formation of ovum caeses in women around the ... D. If both Assertion & Reason are False.

How is menarche different from menopause? -Science

Description : How is menarche different from menopause? -Science

Last Answer : The first occurrence of menstruation at the age of 12 in females is called menarche. Menarche is the beginning of the reproductive life of a girl. Menstruation stops when a woman reaches the age ... called the menopause. Thus, reproductive life of a woman starts at menarche and ends at menopause.

Which one of the following statements is incorrect about menstruation? (a) At menopause in the female, there is especially abrupt increase in gonadotropic hormones. (b) The beginning of the cycle of menstruation is called menarche. (c) During normal menstruation about 40 mL blood is lost. (d) The menstrual fluid can easily clot.

Description : Which one of the following statements is incorrect about menstruation? (a) At menopause in the female, there is especially abrupt increase in gonadotropic hormones. (b) The beginning of the cycle of ... normal menstruation about 40 mL blood is lost. (d) The menstrual fluid can easily clot.

Last Answer : (d) The menstrual fluid can easily clot.

Which of the following pubertal event would occur even in the absence of ovarian estrogen production: a) Thelarche. b) Menarche. c) Pubarche. d) Skeletal growth. e) Vaginal cornification.

Description : Which of the following pubertal event would occur even in the absence of ovarian estrogen production: a) Thelarche. b) Menarche. c) Pubarche. d) Skeletal growth. e) Vaginal cornification.

Last Answer : c) Pubarche.

Assertion: Successional process starts only in those areas where no living organisms ever existed. Reason: These areas are not supported by physical e

Description : Assertion: Successional process starts only in those areas where no living organisms ever existed. Reason: These areas are not supported by physical e

Last Answer : Assertion: Successional process starts only in those areas where no living organisms ever existed. Reason: ... and Reason are false, then mark (4)

Assertion : During embrynic stage testes descend down and at the time of birth , it comes into scrotum . Reason : Spermatogenesis process requires les

Description : Assertion : During embrynic stage testes descend down and at the time of birth , it comes into scrotum . Reason : Spermatogenesis process requires les

Last Answer : Assertion : During embrynic stage testes descend down and at the time of birth , it comes into scrotum ... . D. If both Assertion & Reason are False.

Do you believe the difference between the age when boys and girls usually begin puberty has a signifigant effect on the differences between the genders?

Description : Do you believe the difference between the age when boys and girls usually begin puberty has a signifigant effect on the differences between the genders?

Last Answer : Too many variables. But, in short, no.

Puberty occurs in females at the age of

Description : Puberty occurs in females at the age of

Last Answer : Puberty occurs in females at the age of A. 8-10 years B. 11-14 years C. 15-17 years D. 18-20 years

How much pubic hair should I have as a 16 year old male almost 17. I started puberty when I was 13 or 14. I have penis hair that is spreading to my upper thighs and spreads to my butt and ball hair. Is that good amount of hair at my age and when started.?

Description : How much pubic hair should I have as a 16 year old male almost 17. I started puberty when I was 13 or 14. I have penis hair that is spreading to my upper thighs and spreads to my butt and ball hair. Is that good amount of hair at my age and when started.?

Last Answer : I don’t understand the question

The beginning of the reproductive age in female is known as D A. The menopause B. The menses C. The menstruation D. Puberty

Description : The beginning of the reproductive age in female is known as D A. The menopause B. The menses C. The menstruation D. Puberty

Last Answer :  Puberty

The beginning of the reproductive age in female is known as D A. The menopause B. The menses C. The menstruation D. Puberty

Description : The beginning of the reproductive age in female is known as D A. The menopause B. The menses C. The menstruation D. Puberty

Last Answer : Puberty

Oocyte is liberated from ovary under the influence of LH, after completing

Description : Oocyte is liberated from ovary under the influence of LH, after completing

Last Answer : Oocyte is liberated from ovary under the influence of LH, after completing A. Meiosis and before ... . Meiosis II after release of first polar body

Meiotic division of the secondary oocyte is completed (a) prior to ovulation (b) at the time of copulation (c) after zygote formation (d) at the time of fusion of a sperm with an ovum.Meiotic division of the secondary oocyte is completed (a) prior to ovulation (b) at the time of copulation (c) after zygote formation (d) at the time of fusion of a sperm with an ovum.

Description : Meiotic division of the secondary oocyte is completed (a) prior to ovulation (b) at the time of copulation (c) after zygote formation (d) at the time of fusion of a sperm with an ovum.

Last Answer : (d) at the time of fusion of a sperm with an ovum.

Assertion :- The young one of cockroach does not look like adult cockroach. Reason :- the mouth parts of young cockroach are not well developed like a

Description : Assertion :- The young one of cockroach does not look like adult cockroach. Reason :- the mouth parts of young cockroach are not well developed like a

Last Answer : Assertion :- The young one of cockroach does not look like adult cockroach. Reason :- the mouth parts of young ... cockroach. A. A B. B C. C D. D

Assertion : New Born baby is resistant for cold Reason : The immune system of new born baby is very well developed .

Description : Assertion : New Born baby is resistant for cold Reason : The immune system of new born baby is very well developed .

Last Answer : Assertion : New Born baby is resistant for cold Reason : The immune system of new born baby is very ... . D. If both Assertion & Reason are false.

Assertion (A): In hydrodynamic journal bearings, the rotating journal is held in floating condition by the hydrodynamic pressure developed in the lubricant. Reason (R): Lubricant flows in a converging-diverging channel. [IES-1994] (a) Both A and R are individually true and R is the correct explanation of A (b) Both A and R are individually true but R is not the correct explanation of A (c) A is true but R is false (d) A is false but R is true

Description : Assertion (A): In hydrodynamic journal bearings, the rotating journal is held in floating condition by the hydrodynamic pressure developed in the lubricant. Reason (R): Lubricant flows in a converging-diverging channel. [IES-1994] ... A (c) A is true but R is false (d) A is false but R is true

Last Answer : (a) Both A and R are individually true and R is the correct explanation of A

Assertion (A): In steady rotating condition the journal inside a hydrodynamic journal bearing remains floating on the oil film. [IES-2008] Reason (R): The hydrodynamic pressure developed in steady rotating conditions in journal bearings balances the load on the journal. (a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true but R is NOT the correct explanation of A (c) A is true but R is false (d) A is false but R is true

Description : Assertion (A): In steady rotating condition the journal inside a hydrodynamic journal bearing remains floating on the oil film. [IES-2008] Reason (R): The hydrodynamic pressure developed in steady rotating conditions in journal ... A (c) A is true but R is false (d) A is false but R is true

Last Answer : (a) Both A and R are true and R is the correct explanation of A

Nondisjunction of a chromosome results in which of the following diagnoses? a) Down Syndrome When a pair of chromosomes fails to separate completely and creates a sperm or oocyte that contains two copies of a particular chromosome (nondisjunction) Down syndrome results from three number 21 chromosomes. b) Huntingon Disease Huntington disease is one example of a germ-line mutation. c) Duchenne Muscular Dystrophy Duchenne muscular dystrophy, an inherited form of muscular dystrophy, is an example of a genetic caused by structural gene mutations. d) Marphan Syndrome Marphan Syndrome is a genetic condition that may occur in a single family member as a result of spontaneous mutation.

Description : Nondisjunction of a chromosome results in which of the following diagnoses? a) Down Syndrome When a pair of chromosomes fails to separate completely and creates a sperm or oocyte that contains two ... genetic condition that may occur in a single family member as a result of spontaneous mutation.

Last Answer : a) Down Syndrome When a pair of chromosomes fails to separate completely and creates a sperm or oocyte that contains two copies of a particular chromosome (nondisjunction) Down syndrome results from three number 21 chromosomes.

(i) Mention the event that induces the completion of the meiotic division of the secondary oocyte. (ii) Trace the journey of the ovum from the ovary, its fertilisation and further development until the implantation of the embryo. -Biology

Description : (i) Mention the event that induces the completion of the meiotic division of the secondary oocyte. (ii) Trace the journey of the ovum from the ovary, its fertilisation and further development until the implantation of the embryo. -Biology

Last Answer : (i)Secondary oocyte completes meiosis-ll only when a sperm enters its cytoplasm. It forms a larger cell, the ootid and a small cell, the second polar body. (ii)The secondary oocyte is ... and inner cell mass.The trophoblast attacheds to endometrium (implantation) and blastocyst gets embedded in it.