Science Series 2026 - Biology Human 05 Time Left: 10:00 Question 1: An overdose of thyroid hormone may cause a person to feel: Always sleepy with slow pulse Restless with rapid heartbeat Unable to digest starch Unable to breathe due to blocked trachea Submit Question 2: Which statement about hormones is correct? They are stored permanently in bones They act on specific target organs They are made only in stomach They act on all cells equally at all times Submit Question 3: The male reproductive cell is called a: Ovum Zygote Sperm Embryo Submit Question 4: The female reproductive cell is called an: Sperm Ovum Zygote Fetus Submit Question 5: Fusion of sperm and ovum is called: Fertilization Fragmentation Budding Respiration Submit Question 6: The cell formed immediately after fertilization is the: Placenta Embryo Zygote Fetus Submit Question 7: In humans, fertilization usually occurs in the: Fallopian tube (oviduct) Ovary Vagina Uterus Submit Question 8: The organ where the embryo implants and develops is the: Uterus Ovary Urethra Fallopian tube Submit Question 9: The structure that connects developing fetus to the mother and allows exchange of nutrients is the: Appendix Alveoli Placenta Nephron Submit Question 10: The umbilical cord mainly contains: Air tubes Digestive tubes Nerve cord of mother Blood vessels connecting fetus to placenta Submit Question 11: Menstruation is the monthly shedding of the lining of the: Lungs Uterus Kidneys Stomach Submit Question 12: The average length of the menstrual cycle in many females is about: 60 days 14 days 28 days 7 days Submit Question 13: Ovulation means: Release of an egg from the ovary Fusion of gametes Birth of baby Formation of urine Submit Question 14: Puberty is the stage when: Reproductive organs mature and secondary sexual characters appear Kidneys stop filtering All muscles become involuntary Bones stop growing completely Submit Question 15: A visible change in boys during puberty is: Formation of ovary Deepening of voice Development of placenta Start of menstruation Submit Question 16: A visible change in girls during puberty is: Formation of testes Growth of beard Deepening of voice like boys Development of breasts Submit Question 17: Sperms are produced in the: Pancreas Uterus Testes Ovaries Submit Question 18: Ova are produced in the: Ovaries Prostate Bladder Testes Submit Question 19: The tube that carries sperms from testes is the: Ureter Oviduct Vas deferens Trachea Submit Question 20: The function of the prostate gland (basic level) is to: Digest fats Store urine Produce eggs Add fluid to semen to help sperm movement Submit Previous Next
