Description : Choose the correct comb ination for labelling of part of seminiferous tubule.
Last Answer : Choose the correct comb ination for labelling of part of seminiferous tubule. A. a-sertoli cell,b- ... -interstitial cel, c spermatozoa. B. C. D.
Description : Which of the following is not a characteristic feature during mitosis in somatic cells? (a) Chromosome movement (b) Synapsis (c) Spindle fibres (d) Disappearance of nucleolus
Last Answer : (b) Synapsis
Description : 2. A human cell containing 22 autosomes and a Y chromosome is probably a a) somatic cell of male b) sperm cell c) somatic cell of female d) unfertilized egg cell
Last Answer : b) sperm cell
Description : Connective tissue around seminiferous tubules possess endocrine cells called
Last Answer : Connective tissue around seminiferous tubules possess endocrine cells called A. leydig cells B. Sertoli cells C. Primary germ cells D. Both A and B
Description : The nutritive cells found in seminiferous tubules are:
Last Answer : The nutritive cells found in seminiferous tubules are: A. Leydig cells B. Sertolic ells C. Atretic follicular cells D. Chromaffin cells.
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.
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
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.
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
Description : Select the correct sequence for transport of sperm cells in male reproductive system. (a) Testis → Epididymis → Vasa efferentia → Vas deferens → Ejaculatory duct → Inguinal canal → Urethra → ... → Urethral meatus (d) Seminiferous tubules → Vasa efferentia → Epididymis → Inguinal canal → Urethra
Last Answer : (c) Seminiferous tubules → Rete testis → Vasa efferentia → Epididymis → Vas deferens → Ejaculatory duct → Urethra → Urethral meatus
Description : Prolonged testosterone therapy can cause: A. Hypertrophy of seminiferous tubules of testes B. Hypertrophy of interstitial cells of testes C. Atrophy of interstitial cells of testes D. Both ‘A’ and ‘B’ are correct
Last Answer : C. Atrophy of interstitial cells of testes
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.
Description : 9. Which one of the following is a case of wrong matching ? (1) Callus - Unorganised mass of cells produced in tissue culture (2) Somatic hybridization - Fusion of two diverse cells (3) Vector DNA - Site for t-RNA synthesis (4) Micropropagation - In vitro production of plants in large number
Last Answer : Vector DNA - Site for t-RNA synthesis
Description : Addis test is the measure of (A) Impairment of the capacity of the tubule to perform osmotic work (B) Secretory function of liver (C) Excretory function of liver (D) Activity of parenchymal cells of liver
Last Answer : A
Description : The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n=50 shall be
Last Answer : The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n=50 shall be A. 50 B. 100 C. 75 D. 25
Description : Selection of somatic hybrid cells? -Biology
Last Answer : answer:
Description : In the human anatomy, eggs and Sperm are a form of which of the followingA.Asexual reproduction B.Sexual reproduction C.GametesD.Somatic cells?
Last Answer : The answer is C. Gametes
Description : $ Meiosis is a requirements of sexual reproduction. ! Meiosis occurs in somatic cells.
Last Answer : $ Meiosis is a requirements of sexual reproduction. ! Meiosis occurs in somatic cells. A. If both As and R ... is wrong D. If both As and R are wrong.
Description : Where does mitosis happen in somatic or germ cells?
Last Answer : Mitosis happens in the somatic cell
Description : Transgenic animals may be prepared by introducing a foreign gene into (A) Somatic cells of young animals (B) Testes and ovaries of animals (C) A viral vector and infecting the animals with the viral vector (D) Fertilised egg and implanting the egg into a foster mother
Last Answer : Answer : D
Description : S1 nuclease hydrolyses (A) DNA of somatic cells (B) DNA of sperms (C) Any double stranded DNA (D) Any single stranded DNA
Description : With reference to plant tissue culture select the matching pair: (1) Sterile triploid—banana and seedless fruit (2) Somaclonal variations—differences appearing (3) Embryoids—non-zygatic embryo produced from somatic cells (4) Pulses—belong to cruciferae
Last Answer : Ans. ((a))
Description : The process of the division of somatic cells of an organism is called (a) Mitosis (b) Meiosis (c) Cytokinesis (d) None of these
Last Answer : Ans:(a)
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.
Description : Which one of the following is a case of wrong matching? (a) Somatic – Fusion of two hybridization diverse cells (b) Vector DNA – Site for tRNA synthesis (c) Micropropagation – In vitro production of plants in large numbers (d) Callus – Unorganised mass of cells produced in tissue culture
Last Answer : (b) Vector DNA – Site for tRNA synthesis
Description : Adult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature? (1) They do not need to reproduce. (2) They are somatic cells. (3) They do not metabolise. (4) All their internal ... Only (1) (b) (1), (3) and (4) (c) (2) and (3) (d) Only (4)
Last Answer : (d) Only (4)
Description : Think carefully, now. How many DNA molecules are in each of your somatic cells?
Last Answer : •In preparation for cell division, DNA is replicated and the chromosomes condense •Each duplicated chromosome has two sister chromatids, which separate during cell division, but a single DNA MOLECULE
Description : Name two types of somatic cells in your body.
Last Answer : Brain and liver
Description : Adult human RBCs are enucleated. Which of the following statement(s) is/are most appropriate explanation for this feature ? (a) They do not need to reproduce (b) They are somatic cells (c) They do not metabolize (d) All their internal space ... (a) (2) (a), (c) and (d) (3) (b) and (c) (4) only (d)
Last Answer : (4) only (d)
Description : Somatic cells of a human have ____ chromosomes and are called (A) 10, haploid (B) 92, diploid (C) 23, haploid (D) 46, diploid
Last Answer : (D) 46, diploid
Description : ‘Barr body’ is found in (1) Sperm (2) Sertoli cells (3) Female somatic cells (4) Male somatic cells
Last Answer : Female somatic cells
Description : why are seminiferous tubules not the same shape -Biology
Description : why are seminiferous tubules so long -Biology
Description : Release of sperms from seminiferous tubules is called
Last Answer : Release of sperms from seminiferous tubules is called A. Spermiogenesis B. Spermiation C. Spermatogenesis D. Fertilization.
Description : Outer coat of seminiferous tubules is composed of fibrous connective tissue called
Last Answer : Outer coat of seminiferous tubules is composed of fibrous connective tissue called A. Tunica ... propria C. Plica semilunaris D. Tunica albuginea
Description : Seminiferous tubules occur in the
Last Answer : Seminiferous tubules occur in the A. liver B. kidney C. ovary D. testis
Description : Seminiferous tubules are composed of
Last Answer : Seminiferous tubules are composed of A. Spermatogonia B. Glandular epithelium C. Sensory epithelium D. Germinal epithelium
Description : Proximal and distal convoluted tubules are parts of (a) seminiferous tubules (b) nephron (c) oviduct (d) vas deferens
Last Answer : (b) nephron
Description : Is the chromosome number of zygote, embryonal cells and adult of a particular organism always constant? How is the constancy maintained in these three stages? -Biology
Last Answer : How is the constancy maintained in these three stages? Answer. Yes, zygote, embryonic cell and adult of a particular organism always constant have constant chromosome number. Sexual reproduction includes gamete formation through meiosis and fertilization.
Description : What occurs in meiosis? How is the chromosome number of daughter cells different?
Last Answer : •Gametes are produced by a variation of cell division called meiosis •Meiosis yields nonidentical daughter cells that have only one set of chromosomes, half as many as the parent cell
Description : The number of chromosomes present in the somatic cell of the human cell is - (1) 23 (2) 44 (3) 46 (4) 92
Last Answer : (3) 46 Explanation: Human cells have 23 pairs of chromosomes (22 pairs of autosomes and one pair of sex chromosomes), giving a total of 46 per cell.
Description : A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has (a) twice the number of chromosomes and four times the amount of DNA (b) ... of chromosomes and twice the amount of DNA (d) same number of chromosomes but twice the amount of DNA
Last Answer : (a) twice the number of chromosomes and four times the amount of DNA
Description : The number of chromosomes present in the somatic cell of the human cell is (1) 23 (2) 44 (3) 46 (4) 92
Last Answer : 46
Description : What is Renal Tubule ?
Last Answer : : The wide tube extending from the axis of the bowman's capsule to the collecting duct is called the renal tubule.
Description : Assertion `:-` Antidiuretic hormone, increases the water permeability of distal convoluted tubule. Reason `:-` In the absence of ADH, water re-absorpt
Last Answer : Assertion `:-` Antidiuretic hormone, increases the water permeability of distal convoluted tubule. Reason ... . If both Assertion & Reason are false.
Description : Assertion `:-` Proximal convoluted tubule is lined by brush-bordered cuboidal epithelium. Reason `:-` PCT is main site of selective reabsorption of us
Last Answer : Assertion `:-` Proximal convoluted tubule is lined by brush-bordered cuboidal epithelium. Reason `:-` ... D. If both Assertion & Reason are false.
Description : Removal of proximal convoluted tubule from the nephron will be result in
Last Answer : Removal of proximal convoluted tubule from the nephron will be result in A. More concentrated urine B. ... C. No urine formation D. More diluted urine