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 : 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 : 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 : 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 : why are seminiferous tubules not the same shape -Biology
Last Answer : answer:
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 : In the absence of a closed vascular system, how do sponges manage to distribute the nutritive substances from choanocytes to rest of the cells ?
Last Answer : In the absence of a closed vascular system, how do sponges manage to distribute the nutritive ... Through cell - to -cell diffusion and amoebocytes
Description : Somatic chromosome number is 40. what shall be chromosome number in the cells of seminiferous tubule?
Last Answer : Somatic chromosome number is 40. what shall be chromosome number in the cells of seminiferous tubule? A. 40 B. 20 C. 10 D. 40 and 20
Description : Which of the following would help in prevention of diuresis? (a) More water reabsorption due to undersecretion of ADH. (b) Reabsorption of Na+ and water from renal tubules due to ... Atrial natriuretic factor causes vasoconstriction. (d) Decrease in secretion of renin by JG cells. (NEE
Last Answer : (b) Reabsorption of Na+ and water from renal tubules due to aldosterone.
Description : The excretory structures of flatworms/ Taenia are (a) flame cells (b) protonephridia (c) Malpighian tubules (d) green glands
Last Answer : (a) flame cells
Description : Match the following organisms with respective characteristics. (A) Pila (i) Flame cells (B) Bombyx (ii) Comb plates (C) Pleurobrachia (iii)Radula (D) Taenia (iv) Malpighian tubules Select the correct option from the following. (A) (B) (C) ... (i) (iv) (c) (iii) (iv) (ii) (i) (d) (ii) (iv) (iii) (i)
Last Answer : (c) (iii) (iv) (ii) (i)
Description : Glucose entry into the cells of the following organ/ tissue is highly dependent on the presence of insulin: A. Brain B. Liver C. Adipose tissue D. Kidney tubules
Last Answer : C. Adipose tissue
Description : Maximum nutritive element aborbed by blood from which part of alimentary canal? -General Knowledge
Description : When breast feeding is replaced by less nutritive food low in proteins and calories, the infants below the age of one year are likely to suffer from
Last Answer : When breast feeding is replaced by less nutritive food low in proteins and calories, the infants ... Pellagra B. Marasmus C. Rickets D. Kwashiorkor
Description : Following replacement of breast feeding by less nutritive food, low in proteins and calories, infants below the age of one year suffer from: (a) kwashiorkor (b) marasmus (c) rickets (d) pellagra
Last Answer : Ans:(c)
Description : A genetically engineered form of brinjal known as the BT brinjal has been developed. The objective of this is (1) to make it pest resistant (2) to improve its taste and nutritive value (3) to make it drought resistant (4) to make its shelflife longer
Last Answer : (1) to make it pest resistant Explanation: Bt Brinjal is a genetically modified (GM) crop created by inserting Cry lAc gene from the soil bacterium Bacillus thuringiensis into Brinjal. The ... like the Brinjal Fruit and Shoot Borer (Leucinodes orbonalis) and Fruit Borer (Hell-coverpa armigera).
Description : The nutritive tissue in the seeds of higher plants is known as - (1) hypocotyl (2) embryo (3) endosperm (4) nucellus
Last Answer : (3) endosperm Explanation: The seed includes three primary regions: the embryo, nutritive tissue, and seed coat. Endosperm is a nutritive tissue that sustains the embryo and seedling. The endosperm may ... the embryo as in many legumes, which use the cotyledons as a food source during germination.
Description : What is the most common nutritive tis- sue for the developing embryos in angiosperm known as?
Last Answer : Endosperm
Description : People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude to 5400 metres have around 8 million. This is because at high altitude ... required amount of O2 to survive (d) there is more UV radiation which enhances RBC production.
Last Answer : (c) atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive
Description : The nutritive tissue around the embryo in seed is a. Endosmosis b. Endodermis c. Endosperm d. Embryo-sac
Description : When breast feeding is replaced by less nutritive food low in proteins and calories; the infants below the age of one year are likely to suffer from (a) rickets (b) kwashiorkor (c) pellagra (d) marasmus.
Last Answer : (d) marasmus.
Description : Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their (a) nutritive value (b) growth response (c) defence action (d) effect on reproduction
Last Answer : (c) defence action
Description : Agar is used for solidifying culture media because A-it does not affect by the growth of bacteria B-it does not add to the nutritive properties of the medium C-the melting and solidifying points of agar solution are not the same D-all of the above
Last Answer : all of the above
Description : Name the gelatin-like substance which is prepared fro various species of red algae growing in Asiatic waters. The prepared product appears in the form of cakes, coarse granules, long ... or in combination with various nutritive substances, as a medium for culturing bacteria and various fungi
Last Answer : ANSWER: Agar-agar or just Agar
Description : 1. When is World Day for Audiovisual Heritage, recognized by the UN observed? 2. Maximum nutritive element aborbed by blood from which part of alimentary canal? 3. Under whose signature are the ... ? 20. During the reign of which Pallava ruler did the Chinese pilgrim Hieun Tsang visit Kanchi?
Last Answer : Answer : 1. October 27 2. Small intestine 3. President 4. Mediterranean 5. As a Viceroy of Taxila 6. Ground water7. 1896 8. Pakistan 9. Central North America 10. Works of the Gupta Art 11. Royal ... Zaire 15. Samudragupta 16. Kenya 17. 6 18. Hershey and Chase 19. U.S.A. 20. Narasimhavaram I
Last Answer : to make it pest resistant
Description : The nutritive tissue in the seeds of higher plants is known as (1) hypocotyl (2) embryo (3) endosperm (4) nucellus
Last Answer : endosperm
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 : The tissue present in the lining of kidney tubules and ducts of salivary glands is -Science
Last Answer : Cuboidal epithelium
Description : How many parts and what are the renal tubules ?
Last Answer : : Renal Tubule: The wide duct of Bowman's capsule extending from the esophagus to the collecting duct is called the renal tubule. It is divided into three parts 1. Orthopedic or proximal spiral duct 2. Henley's loop and 3. Peripheral spiral duct
Description : How many renal tubules are there in two kidneys ?
Last Answer : The two kidneys have a total of 20 lakh renal tubules.
Description : Assertion `:-` Peritubular capillaries secrete substances in the convoluted tubules. Reason `:-` Harmful and useless substances which escaped ultrafil
Last Answer : Assertion `:-` Peritubular capillaries secrete substances in the convoluted tubules. Reason `:-` Harmful ... D. If both Assertion & Reason are false.
Description : Assertion `:-` Nearly 99 percent of the filtrate has to be reabsorbed by the renal tubules. Reason `:-` Glucose is reabsorbed by active mechanism is P
Last Answer : Assertion `:-` Nearly 99 percent of the filtrate has to be reabsorbed by the renal tubules. Reason ` ... . D. If both Assertion & Reason are false.
Description : Changeable threshold material in Renal tubules
Last Answer : Changeable threshold material in Renal tubules A. Water and Glucose B. Urea & Uric acid C. Glucose & Amino acids D. Water & salts
Description : Water reabsorption in the distal parts of kidney tubules is regulated by
Last Answer : Water reabsorption in the distal parts of kidney tubules is regulated by A. STH B. TSH C. ADH D. MSH
Description : Malpighian tubules are analogous to
Last Answer : Malpighian tubules are analogous to A. Trachea of cockroach B. Gills C. Flame cells D. None of these
Description : Uriniferous tubules occur in
Last Answer : Uriniferous tubules occur in A. Stomach B. Testes C. Ovary D. Kidney
Description : In female cockroach, how many ovarian tubules or ovarioles are present ?
Last Answer : In female cockroach, how many ovarian tubules or ovarioles are present ? A. 3 B. 6 C. 8 D. 16