Reproduction
- Consider the following :A. The reductive division for the human female gametogenesis starts earlier than that of the male gametogenesis.B. The gap between the first meiotic division and the second meiotic division is much shorter for males compared t… Answer: 1. A and B are true Key idea: Compare timing of meiosis in the two sexes and the role of hormones. A is true. In females meiosis I b... 1
- The first menstruation is called : Answer: 2. Menarche Key idea: The first menstrual flow at puberty is menarche. Menopause is the permanent end of cycles, diapause is delayed... 1
- Match List - I with List - II.List - I: A. Head; B. Middle piece; C. Acrosome; D. TailList - II: I. Enzymes; II. Sperm motility; III. Energy; IV. Genetic materialChoose the correct answer from the options given below : Answer: 1. A-IV, B-III, C-I, D-II Head: genetic material (IV) Middle piece: mitochondria give energy (III) Acrosome: enzymes for penetrating... 1
- Find the correct statements :A. In human pregnancy, the major organ systems are formed at the end of 12 weeks.B. In human pregnancy the major organ systems are formed at the end of 8 weeks.C. In human pregnancy heart is formed after one month of gest… Answer: 4. A, C, D and E Only Key idea: This follows the NCERT timeline of human pregnancy. Heart forms after about one month (C correct). L... 1
- What are the potential drawbacks in adoption of the IVF method?A. High fatality risk to motherB. Expensive instruments and reagentsC. Husband/wife necessary for being donorsD. Less adoption of orphansE. Not available in IndiaF. Possibility that the e… Answer: 1. B, D, F only Key idea: Drawbacks of IVF are about cost, embryo survival and its limited social effect, not risk to life. B: corre... 1
- Match List I with List II :List I:A. Non-medicated IUDB. Copper releasing IUDC. Hormone releasing IUDD. ImplantsList II:I. Multiload 375II. ProgestogensIII. Lippes loopIV. LNG-20Choose the correct answer from the options given below : Answer: 1. A-III, B-I, C-IV, D-II Non-medicated IUD - Lippes loop (A-III). Copper releasing IUD - Multiload 375 (B-I). Hormone releasing IUD... 1
- Identify the correct option (A), (B), (C), (D) with respect to spermatogenesis.[Flow chart: GnRH -> LH -> (B) -> Androgens -> Formation of spermatids; GnRH -> (A) -> (C) -> Factors -> (D)] Answer: 2. FSH, Leydig cells, Sertoli cells, spermiogenesis. Key idea: in males, LH acts on Leydig cells to make androgens, and FSH acts on... 1
- Which of the following is not a natural/traditional contraceptive method? Answer: 1. Vaults Natural or traditional methods are periodic abstinence, coitus interruptus (withdrawal) and lactational amenorrhea; they a... 1
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :Assertion A : Breast-feeding during initial period of infant growth is recommended by doctors for bringing a healthy baby.Reason R : Colostrum cont… Answer: 2. Both A and R are correct and R is the correct explanation of A. Key idea: colostrum is the first milk, rich in antibodies (IgA).... 1
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :Assertion A : FSH acts upon ovarian follicles in female and Leydig cells in male.Reason R : Growing ovarian follicles secrete estrogen in female wh… Answer: 1. A is false but R is true Key idea: check the target cells of FSH. In females FSH acts on ovarian follicles. In males FSH acts on... 1
- Which of the following is not a component of Fallopian tube? Answer: 2. Uterine fundus Key idea: the fundus belongs to the uterus, not the Fallopian tube. The oviduct has four parts from the ovary side... 1
- Given below are two statements :Statement I : The presence or absence of hymen is not a reliable indicator of virginity.Statement II : The hymen is torn during the first coitus only.In the light of the above statements, choose the correct answer from… Answer: 4. Statement I is true but Statement II is false Key idea: the hymen can be torn by many activities, so it is not a sign of virginit... 1
- Match List I with List II.List I: A. Vasectomy; B. Coitus interruptus; C. Cervical caps; D. SaheliList II: I. Oral method; II. Barrier method; III. Surgical method; IV. Natural methodChoose the correct answer from the options given below: Answer: 3. A-III, B-IV, C-II, D-I Key idea: Classify the contraceptive method. Vasectomy: surgical (III). Coitus interruptus: natural method... 1
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.Assertion A: Endometrium is necessary for implantation of blastocyst.Reason R: In the absence of fertilization, the corpus luteum degenerates that ca… Answer: 3. Both A and R are true but R is NOT the correct explanation of A. Key idea: Both statements are true, but they are unrelated. A is... 1
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.Assertion A: Amniocentesis for sex determination is one of the strategies of Reproductive and Child Health Care Programme.Reason R: Ban on amniocente… Answer: 1. A is false but R is true. Key idea: Amniocentesis is misused to find the sex of the foetus, so it is banned for that purpose. Ass... 1
- Given below are two statements:Statement I: Vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct.Statement II: The cavity of the cervix is called cervical canal which along with vagina forms birth canal.In… Answer: 2. Both Statement I and Statement II are true. Key idea: Check each statement against male and female reproductive anatomy. Statemen... 1
- Which of the following statements are correct regarding female reproductive cycle?A. In non-primate mammals cyclical changes during reproduction are called oestrus cycle.B. First menstrual cycle begins at puberty and is called menopause.C. Lack of me… Answer: 1. A, C and D only Key idea: Check each statement. A is correct: non-primate mammals show the oestrus cycle. B is wrong: the first m... 1
- Which one of the following common sexually transmitted diseases is completely curable when detected early and treated properly? Answer: 3. Gonorrhoea Key idea: Bacterial STDs can be cured with antibiotics, but viral STDs cannot. HIV, genital herpes and hepatitis-B are... 1
- Match List - I with List - II with respect to methods of Contraception and their respective actions.List - I: (a) Diaphragms (b) Contraceptive Pills (c) Intra Uterine Devices (d) Lactational AmenorrheaList - II: (i) Inhibit ovulation and Implantation… Answer: 3. (a) - (iv), (b) - (i), (c) - (ii), (d) - (iii) Key idea: Match each method to its action. (a) Diaphragms cover the cervix and blo... 1
- Which of the following statements are true for spermatogenesis but do not hold true for Oogenesis ?(a) It results in the formation of haploid gametes(b) Differentiation of gamete occurs after the completion of meiosis(c) Meiosis occurs continuously i… Answer: 1. (b), (c) and (e) only Key idea: Compare each statement for the two processes. (a) Both give haploid gametes. Not exclusive. (b) I... 1
- Given below are two statements :Statement I :The release of sperms into the seminiferous tubules is called spermiation.Statement II :Spermiogenesis is the process of formation of sperms from spermatogonia.In the light of the above statements, choose… Answer: 4. Statement I is correct but Statement II is incorrect Key idea: Spermiation and spermiogenesis are different steps. Statement I: s... 1
- Lippe's loop is a type of contraceptive used as : Answer: 4. Non-Medicated IUD Key idea: Lippes loop is a plastic, inert intrauterine device. IUDs come in three types: non-medicated (Lippes... 1
- At which stage of life the oogenesis process is initiated ? Answer: 3. Embryonic development stage Key idea: Oogenesis begins before birth, during the embryonic stage. Oogonia form in the foetal ovary... 1
- Which of the following is not a step in Multiple Ovulation Embryo Transfer Technology (MOET) ? Answer: 1. Cow is administered hormone having LH like activity for super ovulation In MOET, the cow is given hormone with FSH-like activity... 1