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Given below are two statements regarding oogenesis. Statement I: The primary follicles get surrounded by more layers of granulosa cells, a theca and shows fluid filled cavity antrum. Now it is called secondary follicle. Statement II: Graafian follicle ruptures to release the secondary oocyte from the ovary by the process called ovulation. In the light of the above statements, choose the correct answer from the options given below:
Which one of the following statements about human sperm is correct?
Pills, implants and IUDs are very effective if taken within __________ of coitus.
MTP is:
In vitro fertilization is a technique that involves transfer of which one of the following into the fallopian tube?
To avoid transmission of STDs: I. Avoid sex with multiple partners. II. Always have unprotected sex. III. Use condoms during coitus. IV. Avoid sex with unknown partners V. Avoid sharing of needles Which of the above statements are correct?
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 the options given below:
Which one of the following is not the function of placenta?
Given below are two statements: Statement I: Degeneration of corpus luteum in the absence of fertilization is the cause for disintegration of endometrium. Statement II: Cyclic menstruation indicates normal reproductive phase in human females and extends between menarche and menopause. In the light of the above statements, choose the correct answer from the options given below:
Pills: I. Inhibit ovulation and implantation II. Alter the quality of cervical mucus to prevent or retard the entry of sperms III. Prevent the ejaculated semen from entering the female vagina IV. Inhibit spermatogenesis Which of the above statements are correct?
"Test tube" baby refers to:
The permissible use of the technique amniocentesis is for:
In the assisted reproductive technology where gametes have been fertilized in vitro, which of the following is practicable for embryo transplantation in fallopian tube?
If one strand of DNA has the nitrogenous base sequence as ATCTG, what would be the complementary RNA strand sequence?
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 while interstitial cells secrete androgen in male human being. In the light of the above statements, choose the correct answer from the options given below:
Identify the correct statement on 'inhibin':
Birth control pills contain synthetic estrogen and progesterone. How might these hormones prevent pregnancy?
Sound waves travel at $350 \text{ m/s}$ through warm air and at $3500 \text{ m/s}$ through brass. The wavelength of a $700 \text{ Hz}$ acoustic wave as it enters brass from warm air:
Streptokinase produced by bacterium Streptococcus is used for
A particle moves along a straight line OX. At a time t (in seconds), the displacement x (in metres) of the particle from O is given by x = 40 + 12t - t³. How long would the particle travel before coming to rest?