Reproduction
- Capacitation occurs in : Answer: 3. Female Reproductive tract Key idea: Freshly ejaculated sperm cannot fertilise an ovum yet. They must spend some time in the secre... 1
- Which of the following depicts the correct pathway of transport of sperms? Answer: 4. Rete testis → Efferent ductules → Epididymis → Vas deferens The sperm path is: seminiferous tubules, then rete testis, then effer... 1
- Match Column—I with Column—II and select the correct option using the codes given below :Column—I: a. Mons pubis; b. Antrum; c. Trophectoderm; d. NebenkernColumn—II: (i) Embryo formation; (ii) Sperm; (iii) Female external genitalia; (iv) Graafian fol… Answer: 1. (iii) (iv) (i) (ii) Mons pubis: fatty cushion over the pubic bone, part of the female external genitalia (iii). Antrum: fluid-fil... 1
- Several hormones like hCG, hPL, estrogen, progesterone are produced by Answer: 1. placenta The placenta is a temporary endocrine tissue during pregnancy. It makes hCG, hPL (human placental lactogen), estrogens a... 1
- Embryo with more than 16 blastomeres formed due to in vitro fertilization is transferred into Answer: 4. uterus In IVF-ET, an embryo with up to 8 blastomeres is transferred into the fallopian tube (ZIFT). An embryo with more than 8 bl... 1
- Which of the following is hormone-releasing IUD? Answer: 4. LNG-20 IUDs are of three kinds: non-medicated (Lippes loop), copper releasing (Cu7, Multiload 375, CuT) and hormone releasing (Pr... 1
- Which of the following is incorrect regarding vasectomy? Answer: 1. No sperm occurs in epididymis In vasectomy the vasa deferentia are cut and tied, so sperm cannot reach the seminal fluid. The ste... 1
- Which of the following approaches does not give the defined action of contraceptive ? Answer: 4. Vasectomy - prevents spermatogenesis Key idea: Vasectomy blocks the transport of sperms; it does not stop spermatogenesis. In vas... 1
- Fertilization in humans is practically feasible only if : Answer: 2. the ovum and sperms are transported simultaneously to ampullary - isthmic junction of the fallopian tube. Key idea: Fertilization... 1
- Select the incorrect statement : Answer: 3. LH and FSH decrease gradually during the follicular phase. Key idea: LH and FSH rise, not fall, during the follicular phase. FSH... 1
- Changes in GnRH pulse frequency in females is controlled by circulating levels of : Answer: 1. estrogen and progesterone Key idea: GnRH pulse frequency in females is controlled by the circulating levels of oestrogen and prog... 1
- In context of Amniocentesis, which of the following statement is incorrect ? Answer: 4. It can be used for detection of Cleft palate. Key idea: Amniocentesis tests fluid-borne foetal cells for chromosomal and metaboli... 1