NCERT CLASS 12 | TOPIC : HUMAN REPRODUCTION | QB-3 | NEET BIOLOGY ONLINE TEST

---

---

NCERT CLASS 12 | TOPIC : HUMAN REPRODUCTION | QB-3 | NEET BIOLOGY ONLINE TEST

---

It contains 53 important questions. Choose the most correct answer. Then check your answer. Try again if there are errors. Regards : www.onlinetest.kalvisolai.com

---

1 ➤ 201. What is indicated by ‘j’ in the figure?

---

---

(a) Vagina (b) Cervical canal (c) Cervix (d) Myometrium

2 ➤ 202. What does ‘h’ represent in the figure?

---

---

(a) Fimbrial (b) Infundibulum (c) Isthmus (d) Ampulla

3 ➤ 203. In the figure, identify the structure ‘f ’ which consists of ‘g’ and ‘h’.

---

---

(a) Ovary (b) Fallopian tube (c) Uterus (d) Cervix

4 ➤ 204. What does ‘d’ represent in the figure?

---

---

(a) Pericardium (b) Perimetrium (c) Peritoneum (d) Epimetrium

5 ➤ 205. What is indicated by ‘b’ in the figure?

---

---

(a) Villi (b) Endothelium (c) Endometrium (d) Epithelium

6 ➤ 206. What does ‘e’ represent in the figure?

---

---

(a) Uterus (b) Isthmus (c) Uterine fundus (d) Uterine ampulla

7 ➤ 207. Select the correct sequence:

(a) GnRH → LH → Leydig cells → Androgens → Spermatogenesis (b) GnRH → FSH → Sertoli cells → Some factors → Spermiogenesis (c) Both are correct (d) Both are incorrect

8 ➤ 208. Acrosome is a modified

(a) Golgi body (b) ER (c) Vacuole (d) Ribosome

9 ➤ 209. Antrum is present in

(a) Primary follicle (b) Secondary follicle (c) Tertiary follicle (d) All of these

10 ➤ 210. Primary oocyte grows in size and completes its first meiotic division inside the

(a) Primary follicle (b) Secondary follicle (c) Tertiary follicle (d) All of these

11 ➤ 211. Which of the following undergoes unequal division?

(a) Primary oocyte (b) Pollen grain of angiosperm (c) Yeast cell during bud formation (d) All the above

12 ➤ 212. Secondary oocyte develops zona pellucida around it in the ____.

(a) Primary follicle (b) Secondary follicle (c) Tertiary follicle (d) Graafian follicle

13 ➤ 213. Theca layer is organized into theca interna and externa in which follicle?

(a) 1° (b) 2° (c) 3° (d) Mature follicle

14 ➤ 214. How many ovum(s) is/are released in one menstruation?

(a) 1 (b) 2 (c) 3 (d) 4

15 ➤ 215. Which of the facts is true about menstruation?

(a) It occurs only when the released ovum is not fertilized. (b) It occurs due to the breakdown of endometrial lining. (c) Menstrual flow lasts for 3 to 5 days. (d) All the above

16 ➤ 216. Menopausal age in human being is

(a) 45 years (b) 55 years (c) 50 years (d) 60 years

17 ➤ 217. The time required to convert primary follicle into mature follicle is

(a) 4 days (b) 9 to 11 days (c) 18 to 20 days (d) 2 days

18 ➤ 218. Fertilization takes place at

(a) Isthmus (b) Ampulla (c) Infundibulum (d) Ampullary-isthmic junction

19 ➤ 219. Which part of the sperm helps in penetration into the ovum?

(a) Mitochondria (b) Acrosome (c) Tail (d) All of these

20 ➤ 220. Second meiotic division in secondary oocyte is

(a) Unequal (b) Complete after sperm penetration (c) Both (a) and (b) (d) Equal

21 ➤ 221. The embryo with 8 to 16 blastomeres is called

(a) Blastula (b) Gastrula (c) Morula (d) None of these

22 ➤ 222. Implantation leads to

(a) Formation of trophoblast in blastocyst (b) Formation of inner cell mass in blastocyst (c) Pregnancy (d) All the above

23 ➤ 223. Which of these hormones is/are produced in women during pregnancy?

(a) HCG (b) HPL (c) Relaxin (d) All of these

24 ➤ 224. Which of these statements is incorrect about embryo development?

(a) After one month of pregnancy the heart is formed. (b) By the end of first trimester most of the major organ systems are formed. (c) First movement of foetus is observed in the seventh month. (d) At the end of second trimester, the body is covered with fine hair, eyelids separate and eye lashes are formed.

25 ➤ 225. The process of delivery of foetus is called

(a) Parturition (b) Gestation (c) Ejaculation (d) Capacitation

26 ➤ 226. Find the false statement.

(a) A pair of seminal vesicles is present in human males. (b) A pair of prostates is present in human males. (c) Glans penis is covered by a loose fold of skin called foreskin. (d) Each fallopian tube is about 10 to 12 cm long in a human female.

27 ➤ 227. The ploidy of spermatogonia, primary spermatocyte, secondary spermatocyte and spermatid is

(a) 2n, 2n, 2n, n (b) n, 2n, 2n, n (c) n, 2n, n, n (d) 2n, 2n, n, n

28 ➤ 228. Stem cells which have the potential to produce all types of cells, tissues and organs are present in

(a) Ectoderm (b) Inner cell mass (c) Trophoblast (d) Endoderm

29 ➤ 229. What is indicated by ‘c’ in the figure?

---

---

(a) Urethra (b) Ovary (c) Clitoris (d) Public symphysis

30 ➤ 230. What does ‘f’ represent in the figure?

---

---

(a) Clitoris (b) Labia majora (c) Labia minora (d) Urethra

31 ➤ 231. What is indicated by ‘k’ in the figure?

---

---

(a) Ovary (b) Cervix (c) Vagina (d) Urethra

32 ➤ 232. What is indicated by ‘b’ in the figure?

---

---

(a) Uterus (b) Vagina (c) Public symphysis (d) Urinary bladder

33 ➤ 233. What does ‘d’ represent in the figure?

---

---

(a) Vagina (b) Clitoris (c) Urethra (d) Cervix

34 ➤ 234. Assertion: Testis is situated outside the abdominal cavity with in a pouch called scrotum. Reason: Scrotum helps in maintaining the low temperature of the testes necessary for spermatogenesis.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

35 ➤ 235. Assertion: Male germ cells undergo mitotic division finally leading to sperm formation. Reason: Sertoli cells provide nutrition to Leydig cells.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

36 ➤ 236. Assertion: Myometrium undergoes cyclical changes during menstrual cycle. Reason: Myometrium’s lines the uterine cavity

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

37 ➤ 237. Assertion: Spermatogonia are haploid cells. Reason: Spermatogonia multiply by binary fisision.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

38 ➤ 238. Assertion: Androgens stimulate the process of spermatogenesis. Reason: FSH acts on sertoli cells and stimulates the secretion of some factors which helps in the process of spermiogenesis.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

39 ➤ 239. Assertion: Oogenesis is initiated during the embryonic development stage when a couple of million gamete mother cell (oogonia) are formed with in each foetal ovary. Reason: No more oogonia are formed and added after birth.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

40 ➤ 240. Assertion: Rupture of Graffian follicle occur before the 14th day of onset of next menstrual cycle. Reason: LH level is maximum during the mid of cycle, i.e., (14th day).

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

41 ➤ 241. Assertion: Only one sperm can fertilize ovum. Reason: A sperm when comes in contact with zona pellucida layer of the ovum, some changes occur in membrane that blocks the entry of other sperm.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

42 ➤ 242. Assertion: In humans the menopause occurs at approximately 50 years of age. Reason: Cyclic menstruation is an indicator of abnormal reproductive phase.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

43 ➤ 243. Assertion: Mammary glands differentiate during pregnancy. Reason: Mammary glands secretes milk after child birth.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

44 ➤ 244. Assertion: Human are viviparous. Reason: Human are sexually reproducing organism.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

45 ➤ 245. Assertion: Proximal end of fallopian tube (infundibulum) possess fimbriae (finger like projection). Reason: Fimbriae help in catching of ovum after ovulation.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

46 ➤ 246. Assertion: The presence or absence of hymen is not a reliable indicator of virginity or sexual experience. Reason: Hymen often torn during first intercourse but it can also be broken by sudden fall,insertion of vaginal tampon, active participation in some sports like horse riding, cycling.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

47 ➤ 247. Assertion: Reproductive cycle in female primates is called menstrual cycle. Reason: Menstruation begins at puberty and is known as menarche.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

48 ➤ 248. Assertion: Lack of menstruation may be indicative of pregnancy in reproductive period of female. Reason: Menstruation usually occurs if the released ovum is not fertilised.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

49 ➤ 249. Assertion: Follicular phase is also referred as proliferative phase. Reason: During follicular phase, the endometrium of uterus regenerates through proliferation.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

50 ➤ 250. Assertion: Ovulation generally occur during the mid of cycle Reason: LH surge occur in mid of cycle.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

51 ➤ 251. Assertion: All copulations not lead to fertilization. Reason: Fertilization can only if the ovum & sperm are transported simultaneously to the ampullary-isthmic junction.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

52 ➤ 252. Assertion: Zygote of human contains 46 chromosomes. Reason: Zygote is formed by fusion of haploid cells namely sperm and ovum.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

53 ➤ 253. Assertion: Sex of human baby is determined by father not by mother. Reason: XY sex chromosome is present in human male.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

54 ➤ 254. Assertion: Doctors use to inject oxytocins to induce delivery. Reason: Oxytocin causes uterine contraction which helps in delivery.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

Your Score is

---

Share: