| Statement (A) : | Soon after the placenta is delivered, the infant is also expelled out of the uterus. |
| Statement (B) : | Doctors inject oxytocin to induce delivery of the baby when it is not secreted in adequate amount from maternal pituitary. |
| 1. | Both statements (A) and (B) are correct |
| 2. | Both statements (A) and (B) are incorrect |
| 3. | Only statement (A) is correct |
| 4. | Only statement (B) is correct |
| a. | Humans are sexually reproducing and viviparous. |
| b. | The ovaries in human females produce only hormones. |
| c. | The mammary glands are one of the female secondary sexual characters. |
| d. | A normal human sperm is composed of a head, neck, and middle piece only. |
| a. | Interstitial spaces of testis contain Leydig cells and other immunologically competent cells. |
| b. | Testes are situated inside the abdominal cavity within a pouch called scrotum. |
| c. | The scrotum helps in maintaining the low temperature necessary for spermatogenesis. |
| d. | Each lobule of testis contains 250 seminiferous tubules in which sperms are produced. |
| Column-I | Column-II | ||
| a. | Milk | (i) | Spermatids are transformed into spermatozoa |
| b. | Primary spermatocyte | (ii) | Stored in the cavity of alveoli |
| c. | Spermiogenesis | (iii) | First menstruation begins at puberty |
| d. | Menarche | (iv) | Periodically undergo meiosis |
| (a) | Spermatogonia produce sperm cells by spermatogenesis that begins at puberty. |
| (b) | All spermatogonia periodically undergo meiosis. |
| (c) | A primary spermatocyte completes first meiotic division during embryonic development. |
| (d) | The secondary spermatocytes have only 23 chromosomes each. |
| Assertion (A): | During pregnancy, the level of several hormones like estrogens, progestogens, cortisol, prolactin, thyroxine, etc are increased several folds in the maternal blood. |
| Reason (R): | Increased production of these hormones is essential for supporting the foetal growth, metabolic changes in the mother, and maintenance of pregnancy. |
| 1. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
| (i) | Relaxin is secreted by the ovary in the later phase of pregnancy. |
| (ii) | Inner cell mass differentiates into ectoderm and endoderm just before implantation. |
| (iii) | Implantation leads to pregnancy. |
| (iv) | Embryo with 8 to 16 blastomeres is called morula. |
| Column-I | Column-II | ||
| a. | Breasts in lactating mothers | (i) | Presence or absence is not a reliable indicator of virginity |
| b. | Colostrum | (ii) | Cushion of fatty tissue covered by skin and pubic hairs |
| c. | Mons pubis | (iii) | Contains several antibodies absolutely essential for newborns |
| d. | Hymen | (iv) | 15-20 mammary lobes each |
| Column-I | Column-II | ||
| a. | Perimetrium | (i) | Inner glandular layer of uterus |
| b. | Myometrium | (ii) | External thin membrane of uterus |
| c. | Endometrium | (iii) | Middle thick layer of smooth muscles |
| Column I | Column II | ||
| a. | Parturition | (i) | Release of ovum from ruptured Graafian follicle |
| b. | Menopause | (ii) | Delivery of the baby |
| c. | Ovulation | (iii) | Blastocyst becomes embedded in endometrium |
| d. | Implantation | (iv) | Menstrual cycles ceases around age of 50 years in human female |