What are the functions of the sex hormones? -Biology

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Description : What are sex hormones? Why are they named so? State their function. -Science

Last Answer : The hormones which help and control the formation of secondary sexual characters are called sex hormones. They are named so because they control the sexual activities and are secreted by ... secondary sexual characters in females, appearance of mammary glands, etc. It also maintains pregnancy.

Description : Cholesterol, bile salts, vitamin D and sex hormones are (A) Mucolipids (B) Glycolipids (C) Phospholipids (D) Isoprenoid lipids

Last Answer : Answer : D

Description : The precursor of bile salts, sex hormones and vitamin D is (A) Diosgenin (B) Cholesterol (C) Campesterol (D) Ergosterol

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Description : Which one of the following glands is responsible for secretion of sex hormones? (1) Adrenal gland (2) Thyroid gland (3) Pituitary gland (4) Sebaceous gland

Last Answer : (3) Pituitary gland Explanation: The pituitary is sometimes referred to as the "master gland" as it controls hormone functions such as our temperature, thyroid activity, growth during childhood, urine production, testosterone production in males and ovulation and estrogen production' in females.

Description : Who discovered sex hormones? (1) Dreser (2) Eugen Steinach (3) Edward Calvin (4) Samuel Cohen

Last Answer : (2) Eugen Steinach Explanation: Eugen Steinach discovered the sex hormones in 1921. He conducted experiments in the transplantation of a male guinea pig's testes into a female and the ... the partner. This led Steinach to theorize that the gland's secretions were responsible for sexuality.

Description : What are sex hormones? Why are they named so? State their function.

Last Answer : Sex hormones are the hormones that control the development of secondary sexual characteristics and also regulate the proper functioning of the sex organs. They are named so because they are produced ... in females such as the enlargement of breasts, development of female reproductive organs, etc.

Description : Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female? (a) Maintenance of the hypertrophical endometrial lining (b) ... the blood stream (c) Retention of well-developed corpus luteum (d) Fertilisation of the ovum

Last Answer : (b) Maintenance of high concentration of sex- hormones in the blood stream

Description : Which one of the following glands is responsible for secretion of sex hormones ? (1) Adrenal gland (2) Thyroid gland (3) Pituitary gland (4) Sebaceous gland

Last Answer : Pituitary gland

Description : Allosomes are (1) cell organelles (2) plant hormones (3) alleles (4) sex chromosomes

Last Answer : sex chromosomes

Description : Who discovered sex hormones? (1) Dreser (2) Eugen Steinach (3) Edward Calvin (4) Samuel Cohen 

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Description : What are the hormones secreted by Adrenal gland (Adrenal cortex, Adrenal medulla)? What are the chief functions of these hormones. -Biology

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Description : Explain the hormones of the pituitary gland and functions. -Biology

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Description : Which of the following structures or regions is incorrectly paired with its functions? (a) Medulla : Controls respiration oblongata and cardiovascular reflexes (b) Limbic : Consists of fibre tracts ... thirst (d) Corpus callosum : Band of fibers connecting left and right cerebral hemispheres

Last Answer : (b) Limbic : Consists of fibre tracts system that interconnect different regions of brain controls movement

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Last Answer : B) thymus--use of iodine to make thyroxine for regulation of body growth

Description : Do genetic combination of mothers play a significant role in determining the sex of new born? -Biology

Last Answer : The sex of the embryo or the child in humans is determined by the father whereas, the genetic combination of mother does not play a role in determining the sex of the new-born baby.

Description : Explain the mechanism of sex determination in humans. Or With the help of a flow chart explain in brief how the sex of a newborn is genetically determined in human beings. Which of the two parents, the mother or the father, is responsible for determination of sex of a child? -Biology

Last Answer : Mechanism of Sex Determination in Human Beings: In human beings, the sex of the individual is genetically determined.Sex determination is the process by which sex of a new born individual can be ... happens at fertilisation. Thus, father is responsible for the determination of the sex of a child.

Description : ”The sex of the children is determined by what they inherit from their father and not their mother.” Justify. -Biology

Last Answer : It is because a child who inherits an X chromosome from her father will be a girl and one who inherits a Y chromosome from his father will be a boy. But all children inherit a X chromosome from their mother regardless of whether they are boys or girls.

Description : What is a sex chromosome? -Biology

Last Answer : Sex chromosome is a chromosome that operates in the sex-determining mechanism of a species. Many animals have two different types of sex chromosomes. For example, in human there is a large X chromosome and a much smaller Y chromosome.

Description : How is sex determined in human beings? -Biology

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Description : what do you mean by sex influenced gene? -Biology

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Description : Why do sex linked traits appear more in males than in females? -Biology

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Description : Why do sex linked traits appear more in males than in females? -Biology

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Description : (a) What are plant hormones ? Give one example each of a plant hormone that -Biology-10

Last Answer : Plant Hormones: Phytohormones are chemical substances other than nutrients produced naturally in plants which regulate growth, development, differentiation and a number of physiological ... , respiratory centre. C-Cerebellum Function: Maintains equilibrium and coordinates muscular activities

Description : What are the hormones involved in providing milk to the suckling infant ? -Biology-10

Last Answer : Prolactin (Maternity Hormone). Production of milk. 2. Oxytocin Ejection of milk

Description : What are plant hormones ? -Biology-10

Last Answer : Plant hormones are also called phytohormones. Plant hormones are the chemical substances which help in controlling growth, flowering, height, development of plants and their response to the ... types of phytohormones are – auxins, gibberllins, cytokinins, abscisic acid and ethylene.

Description : Study the flow chart given below. Name the hormones involved at each stage and explain their role. -Biology

Last Answer : Ovulation Induced by LH secreted from anterior pituitary. LH also stimulates the formation of corpus luteum and secretion of progesterone from it. Pregnancy Progesterone is necessary for ... secretion of oxytocin which induces stronger contractions of uterine muscles leading to parturition.

Description : Study the flow chart given below. Name the hormones involved at each stage and explain their function. -Biology

Last Answer : Hypothalamus Gonadotropin Releasing Hormones (GnRH) are released by the hypothalamus. Pituitary GnRH stimulates pituitary to release FSH and LH. Ovary FSH and LH act on ovary. LH ... ruptured follicle and secretion of progesterone by the corpus luteum. Pregnancy Progesterone maintains pregnancy.

Description : (i) How is placenta formed in human female? (ii) Name any two hormones which are secreted by it and are also present in a non-pregnant woman. [ -Biology

Last Answer : i)After implantation of blastocyst, the finger-like projections called chorionic villi, appear on the trophoblast and is surrounded by uterine tissue and maternal blood which become interdigitated with each ... by placenta that are also present in a non-pregnant women are oestrogen and progesterone.

Description : Name the hormones produced only during pregnancy in human female. Mention their source organ. -Biology

Last Answer : The hormones produced only during pregnancy in human female are human Chorionic Gonadotropin (hCG), human Placental Lactogen (hPL) and relaxin. The source of hCG and hPL — Placenta, and Relaxin — Ovary.

Description : Which hormones are responsible for phototropism? -Biology

Last Answer : Growth curvature response of plants towards light is known as phototropism which is mediated by auxins in plants.

Description : What are the hormones secreted by Pituitary gland? -Biology

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Description : What are the hormones secreted by Thyroid? -Biology

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Description : What are the hormones secreted by Gonads (Testes, Ovaries)? -Biology

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Description : What are the hormones secreted by Hypothalamus? -Biology

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Description : What are the hormones secreted by Parathyroid? -Biology

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Description : What are the hormones secreted by Pancreas? -Biology

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Description : What are the hormones secreted by Thymus? -Biology

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Description : What are the hormones that prevent water loss at the kidneys? -Biology

Last Answer : Direct control of water excretion in the kidneys is exercised by vasopressin, or anti-diuretic hormone (ADH), a peptide hormone secreted by the hypothalamus. ADH causes the insertion of water channels into the membranes of cells lining the collecting ducts, allowing water reabsorption to occur.

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Description : What are the five major types of plant hormones? -Biology

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Description : Types of plant hormones. -Biology

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Description : Which plant hormones have stimulatory effects? -Biology

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Description : Which plant hormones have inhibitory effects? -Biology

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