Tiêu đề 2 Human Reproduction - Complete Questions n Answers - Topic wise.pdf ✅

© www.bankofbiology.com All rights reserved. 02 FEMALE REPRODUCTIVE SYSTEM 13. Odd man out. Justify your answer. (Score 2) a. Prostate, rete testis, vas deferens, hymen b. Infundibulum, clitoris, ampulla, isthmus  Answer a. Hymen. It is the part of female reproductive system. Others belong to male reproductive system. b. Clitoris. It is the part of female external genitalia. Others are parts of fallopian tube. 14. Observe the diagram given below showing the sectional view of the female reproductive system and name the parts labelled 'A', 'B', 'C' & 'D'. (Score 2)  Answer A= Endometrium / Uterus B= Ovary C= Isthmus of fallopian tube D= Ampulla of fallopian tube 15. Name the following: (Score 2) a. Finger like projections of oviduct that helps in collection of the ovum after ovulation. b. The part of oviduct with a narrow lumen that joins the uterus. c. Funnel shaped part of oviduct that is closer to the ovary.  Answer a. Fimbriae b. Isthmus c. Infundibulum 16. Cervical canal and vagina forms .................. (Score 1)  Answer: Birth canal. 17. Note the relationship between the first two terms and fill the fourth place. (Score 2) a. Male primary sex organ: Testes Female primary sex organ: ..................... b. Seminiferous tubules: Sperm Graafian follicles: .................. c. Leydig cells: testosterone Corpus luteum: ...................  Answer a. Ovary b. Ovum c. Progesterone 18. The uterine wall has 3 layers. (Score 2) a. Name them in the sequence of outer to inner. b. Which layer is glandular and vascular?  Answer a. Perimetrium, Myometrium & Endometrium. b. Endometrium. 19. Given below are some structures regarding reproductive system. (Score 2) Uterus, Mons pubis, labia majora, fimbriae, labia minora, Prostate, cervical canal, hymen, fallopian tubes, clitoris, Ovarian stroma a. Select the parts of female external genitalia. b. There is a structure that is not the part of female reproductive system. Pick out it.  Answer a. Mons pubis, labia majora, labia minora, hymen & clitoris. b. Prostate. 20. Match the column A with column B. (Score 2) Column A Column B (a) Mons pubis 1. Large, fleshy, fatty and hairy outer folds of vagina. (b) Labia majora 2. A membrane which partially covers the vaginal opening. (c) Labia minora 3. A cushion of fatty tissue covered by pubic hair. (d) Hymen 4. Small, thin and hairless inner folds of vagina.  Answer Column A Column B (a) Mons pubis A cushion of fatty tissue covered by pubic hair. (b) Labia majora Large, fleshy, fatty and hairy outer folds of vagina. (c) Labia minora Small, thin and hairless inner folds of vagina. (d) Hymen A membrane which partially covers the vaginal opening. 21. The hymen is not a reliable indicator of virginity or sexual experience. Do you agree? Justify.  Answer Yes. Hymen may be broken by a sudden fall or jolt, insertion of a vaginal tampon; active participation in some sports items etc. In some women, hymen persists after coitus. 22. A highly sensitive female organ lying just in front of the urethral opening is called ............... (Score 1)  Answer: Clitoris.
© www.bankofbiology.com All rights reserved. 03 23. The mammary glands are paired structures (breasts) that contain glandular tissue and variable amount of fat. Rearrange the following parts of mammary glands in the correct sequence of milk conduction: (Score 2) Mammary tubules → mammary alveoli → lactiferous duct → mammary ampulla → mammary duct.  Answer Mammary alveoli → Mammary tubules → mammary duct → mammary ampulla → lactiferous duct. GAMETOGENESIS 24. Complete the flowchart showing spermatogenesis by filling A and B and answer the questions. A → Primary spermatocyte → Secondary spermatocytes → B → Spermatozoa a. What is the chromosome number of primary spermatocytes? b. What is the significance of reduction division in spermatogenesis? (Score 2)  Answer A – Spermatogonia B – Spermatids (A) 46 (B) It produces haploid (23 chromosomes) sperms. 25. Prepare a flowchart explaining the process of spermatogenesis/ oogenesis. (Score 3)  Answer Spermatogenesis Oogenesis 26. Observe the diagram: (Score 3) a. Identify A and B. b. What is the function of C? c. In which of the marked part reduction division takes place? What is the significance of it?  Answer a. A – sperm B – Spermatogonium b. C (Sertoli cells) provides nutrition to germ cells. c. D (Primary spermatocyte). Reduction division leads to formation of haploid gametes. 27. Match the following: (Score 3) A B C Spermatogenesis Formation of ovum Follicle cells Spermiogenesis Sperm head embedded in Sertoli cells Starts from spermatogonia Spermiation Formation of sperms Differentiation of sperms Oogenesis Spermatids to sperms Release of sperms to lumen of seminiferous tubules  Answer A B C Spermatogenesis Formation of sperms Starts from spermatogonia Spermiogenesis Spermatids to sperms Differentiation of sperms Spermiation Sperm head embedded in Sertoli cells Release of sperms to lumen of seminiferous tubules Oogenesis Formation of ovum Follicle cells 28. The following statements compare the process of oogenesis & spermatogenesis. Which one is not true? (A) Production of ovum ceases at certain ages, but sperm production continues even in old men. (B) Oogenesis begins in the embryonic stages, but spermatogenesis starts at the onset of puberty. (C) Meiotic arrest occurs both in oogenesis and spermatogenesis. (D) Polar bodies are formed in oogenesis. (Score 1)
© www.bankofbiology.com All rights reserved. 04  Answer (C) Meiotic arrest occurs both in oogenesis and spermatogenesis. (D) The number of primary spermatocytes and primary oocytes are 200 and 50 respectively. What will be the number of sperms and ova formed? (Score 2)  Answer 1 primary spermatocyte can produce 4 sperms. Therefore, No. of sperms produced from 200 primary spermatocytes = 200 x 4 = 800 sperms. 1 primary oocyte can produce only 1 ovum. Therefore, No. of ova produced from 50 primary oocytes = 50 x 1 = 50 ova. 29. The diagram represents a process of gametogenesis. Closely observe it and answer the following. a. Is it spermatogenesis or oogenesis? b. What the smaller shaded circle represents? c. Write down two significances of production of the same. (Score 2)  Answer a. Oogenesis. b. Polar bodies. c. It helps to produce single ovum only. It also helps to retain more cytoplasm in ovum. 30. Schematic representation of gametogenesis is given below. (Score 3) a. Identify A & B. b. Write any two differences between A & B. c. Why the gametes are produced haploid even though the gamete mother cells are diploid?  Answer a. A – Spermatogenesis B – Oogenesis b. Spermatogenesis • One primary spermatocyte produces 4 sperms. • No polar bodies. Oogenesis • One primary oocyte produces only one ovum. • Polar bodies are formed. c. It is due to meiosis (reduction division) of primary spermatocyte or primary oocyte. 31. Distinguish between spermiogenesis & spermiation.  Answer During spermatogenesis, the spermatids are transformed into spermatozoa (sperms). It is called spermiogenesis. After spermiogenesis, sperm heads are embedded in Sertoli cells to get nourishment. Then the matured sperms are released from the seminiferous tubules. It is called spermiation. 32. Explain the role of various hormones in the process of Spermatogenesis.  Answer Hypothalamus releases Gonadotropin releasing hormone (GnRH). GnRH stimulates the anterior pituitary gland to secrete 2 gonadotropins called Luteinizing hormone (LH) and follicle stimulating hormone (FSH). LH acts on the Leydig cells and stimulates secretion of androgens. Androgens stimulate spermatogenesis. FSH acts on the Sertoli cells and stimulates secretion of some factors for spermiogenesis. 33. Identify the figure and label the parts marked as (A), (B) and (C): (Score 2)  Answer The figure is structure of sperm. (A) Acrosome (B) Middle piece (C) Tail 34. Note the relationship between first two words and fill up the fourth place. (Score 1) a. Formation of sperms: Spermatogenesis Formation of eggs: ................... b. Spermatogenesis: Seminiferous tubules Oogenesis: ...................  Answer a. Oogenesis b. Ovarian follicles