1. : Which type of reproduction involves the fusion of male and female gametes?
(A) Asexual reproduction
(B) Binary fission
(C) Sexual reproduction
(D) Budding
2. : What is the primary function of the placenta in mammals?
(A) Producing eggs
(B) Providing nutrients to the embryo
(C) Protecting the embryo from pathogens
(D) Generating hormones
3. : Which stage of embryonic development follows fertilization?
(A) Gastrula
(B) Blastula
(C) Zygote
(D) Morula
4. : In which part of the female reproductive system does fertilization typically occur?
(A) Uterus
(B) Vagina
(C) Ovary
(D) Fallopian tube
5. : What is the name of the process by which an embryo develops into a fetus?
(A) Gametogenesis
(B) Cleavage
(C) Morphogenesis
(D) Gestation
6. : Which hormone is primarily responsible for ovulation in females?
(A) Progesterone
(B) Estrogen
(C) Luteinizing hormone (LH)
(D) Follicle-stimulating hormone (FSH)
7. : What is the primary purpose of meiosis in sexual reproduction?
(A) To produce identical daughter cells
(B) To maintain chromosome number
(C) To produce gametes with half the chromosome number
(D) To repair damaged cells
8. : During which stage of embryonic development does organogenesis occur?
(A) Morula
(B) Blastula
(C) Gastrula
(D) Zygote
9. : Which structure is responsible for the production of sperm in males?
(A) Epididymis
(B) Seminal vesicle
(C) Testes
(D) Prostate gland
10. : Which type of cleavage results in symmetrical division of the embryo?
(A) Spiral cleavage
(B) Radial cleavage
(C) Bilateral cleavage
(D) Asymmetrical cleavage
11. : What is the primary role of the amniotic fluid during pregnancy?
(A) To provide nutrients
(B) To cushion and protect the embryo
(C) To facilitate gas exchange
(D) To remove waste products
12. : Which developmental stage is characterized by the formation of three primary germ layers?
(A) Zygote
(B) Blastula
(C) Gastrula
(D) Morula
13. : What is the term for the process by which sperm penetrates the egg?
(A) Fertilization
(B) Cleavage
(C) Implantation
(D) Gastrulation
14. : Which structure provides a connection between the fetus and the maternal blood supply?
(A) Amnion
(B) Placenta
(C) Umbilical cord
(D) Yolk sac
15. : In which part of the reproductive system does sperm maturation occur?
(A) Seminal vesicle
(B) Prostate gland
(C) Epididymis
(D) Vas deferens
16. : Which stage of meiosis involves the separation of homologous chromosomes?
(A) Meiosis I
(B) Meiosis II
(C) Mitosis
(D) Cytokinesis
17. : Which hormone helps prepare the uterine lining for implantation?
(A) Estrogen
(B) Luteinizing hormone (LH)
(C) Progesterone
(D) Follicle-stimulating hormone (FSH)
18. : What is the primary function of the corpus luteum?
(A) To produce eggs
(B) To maintain the uterine lining during early pregnancy
(C) To release estrogen
(D) To stimulate ovulation
19. : Which type of reproductive system do insects typically possess?
(A) External fertilization
(B) Internal fertilization
(C) Asexual reproduction
(D) Budding
20. : Which developmental stage follows the blastocyst in human embryonic development?
(A) Morula
(B) Gastrula
(C) Zygote
(D) Embryo
21. : What is the term for the process of cell division in which two identical daughter cells are produced?
(A) Meiosis
(B) Mitosis
(C) Fertilization
(D) Cleavage
22. : Which stage of human development occurs immediately after the fertilized egg implants into the uterine wall?
(A) Embryonic stage
(B) Fetal stage
(C) Pre-embryonic stage
(D) Neonatal stage
23. : In which part of the male reproductive system are seminal fluids produced?
(A) Prostate gland
(B) Testes
(C) Epididymis
(D) Seminal vesicles
24. : Which process involves the transformation of a single-layered blastula into a multi-layered structure?
(A) Cleavage
(B) Gastrulation
(C) Fertilization
(D) Organogenesis
25. : What is the primary function of the yolk sac in embryonic development?
(A) To provide nutrients to the embryo
(B) To produce blood cells
(C) To protect the embryo
(D) To form the placenta
26. : Which hormone is involved in stimulating milk production in mammals?
(A) Oxytocin
(B) Progesterone
(C) Prolactin
(D) Estrogen
27. : Which stage of development is characterized by the appearance of primary tissues and organs?
(A) Zygote
(B) Morula
(C) Blastula
(D) Gastrula
28. : Which structure is primarily responsible for the exchange of gases between the maternal and fetal blood?
(A) Amnion
(B) Placenta
(C) Umbilical cord
(D) Yolk sac
29. : Which type of cleavage is characteristic of the development of most deuterostomes?
(A) Spiral cleavage
(B) Radial cleavage
(C) Bilateral cleavage
(D) Asymmetrical cleavage
30. : What term describes the fusion of sperm and egg to form a zygote?
(A) Gametogenesis
(B) Fertilization
(C) Cleavage
(D) Implantation