All Free Biology MCQs with Answers

• A. Inhibition of ICHS
• B. Sperm production
• C. Inhibition of FSH
• D. Limit spermatogenesis

Explanation: Testosterone's primary functions include promoting sperm production and regulating hormones such as FSH.

• A. Progesterone production
• B. Estrogen production
• C. Ovulation
• D. HCG production

Explanation: Ovaries do not directly produce HCG (Human Chorionic Gonadotropin). HCG is produced by the placenta during pregnancy.

• A. Progesterone
• B. FSH
• C. LH
• D. Testosterone

Explanation: The Corpus Luteum is responsible for producing and secreting progesterone, which helps prepare the uterine lining for potential…

• A. Acts on kidney tubules
• B. Stimulates ICSH
• C. Perform cellular functions
• D. Dilate milk ducts of mammary glands

Explanation: Dilate milk ducts of mammary glands: Correct, as oxytocin is responsible for stimulating milk ejection by contracting the muscles around…

• A. Start of menstruation
• B. Start of ovulation
• C. Stop of ova production
• D. Degeneration of ovaries

Explanation: Menopause is the stage in a woman's life when her ovaries stop producing eggs (ova) and she ceases to have menstrual periods, typically…

• A. Ovary
• B. Uterus
• C. Stimulated follicles
• D. Hypothalamus

Explanation: The production of Follicle-stimulating hormone (FSH) and Luteinizing Hormone (LH) from the pituitary gland in females is controlled by…

• A. Uterus
• B. Kidney
• C. Fallopian tube
• D. Stomach

Explanation: In human females, the small, pear-shaped, muscular, distensible, sac-like organ where gestation takes place is UterusThe uterus is where…

• A. Endometrium
• B. Myometrium
• C. Perimetrium
• D. Ovaries

Explanation: The labor pains to expel the fetus are due to the action of oxytocin on Myometrium Oxytocin is a hormone that is released by the pituitary…

• A. Oviduct
• B. Ovaries
• C. Uterus
• D. Cervix

Explanation: Option A is correct.Fallopian tube is also known as oviduct.Fallopian tubes are muscular tubes that connect the ovaries to the uterus.

• A. Bacterial
• B. Fungal
• C. Protozoic
• D. Viral

Explanation: Option A is correct.Syphilis is a bacterial disease. It is caused by the bacterium Treponema pallidum.

• A. Skin rash on neck
• B. Joint pain
• C. Painful urination
• D. Chancre

Explanation: Option C is correct.The most common symptom of gonorrhea in males is painful urination.

• A. Leydig
• B. Inhibin
• C. Sertoli
• D. TSH

Explanation: Option C is correct.FSH (Follicle stimulating hormones) stimulates spermatogenesis by stimulating Sertoli cells to complete the…

• A. Vas deferens
• B. Epididymis
• C. Scrotum
• D. Vasa efferentia

Explanation: Option C is correct.The testes are male gonads which are situated outside the abdomen within a skin pouch called scrotum.

• A. Viviparous
• B. Oviparous
• C. Ovoviviparous
• D. None of the above

Explanation: This is the correct answer. Humans are viviparous animals, which means they give birth to live young.

• A. Protect sperms
• B. Provides liquid medium to sperms
• C. Provides nourishment to sperms
• D. Secrete testosterone

Explanation: Sertoli cells do not secrete testosterone. Instead, they play a crucial role in supporting and nurturing developing sperm cells

• A. Follicle stimulating harmone
• B. Gonadotrophins
• C. Ovarian hormones
• D. None of these

Explanation: At the beginning of the menstrual phase, the levels of ovarian hormones, specifically estrogen and progesterone, are at their lowest.

• A. Wastages
• B. Gases
• C. Blood
• D. Nutrients

Explanation: Correct, because maternal and fetal blood do not mix; only nutrients and gases diffuse through the placenta.

• A. Graafian follicle
• B. Corpus allatum
• C. Primary follicle
• D. Corpus luteum

Explanation: Correct. After ovulation, the ruptured follicle forms the corpus luteum, which secretes progesterone to maintain the uterine lining for…

• A. Vas deferens
• B. Ejaculatory duct
• C. Urinogenital duct
• D. Vas efferens

Explanation: Vas deferens - Correct. The epididymis stores sperm and then transports it to the vas deferens for ejaculation.

• A. Urinary bladder
• B. Cervix
• C. Oviduct
• D. Labia
• E. Vagina

Explanation: The cervix is a vital part of the female reproductive system. It is a cylindrical-shaped structure that forms the lower part of the uterus…