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PCAT Biology Reproduction

Subjects : pcat, biology
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Union of gametes






2. Simple form of asexual reproduction seen in prokaryotic organisms -DNA replicates and a new plasma membrane and cell wall grow inward along the midline of the cell - dividing it into two equally size cells with equal maounts of cytoplasm - each conta






3. AKA ovanan or fallopian tube -opens into the upper end of the uterus






4. The site of sperm deposition during intercourse and is also the passageway through which a baby is expelled during childbirth






5. Pass from the testes through the vas deferens to the ejaculatory duct and then to the urethra






6. The production of female gametes -occurs in the ovarian follicles






7. The production of female gametes - occurs in the ovaries






8. Mass of cells formed when the zygote divides






9. 1) G1: Initiates interphase. is described as the active growth phase and can vary in length. the cell increases in size and synthesizes proteins. the length of the G1 phase determines the length of the entire cell cycle 2) S: the period of DNA synthe






10. Immature ova -all that a female will produce during her lifetime are already in her ovaries at birth






11. Surrounded by two layers of cells






12. Secretes estrogen and progesterone






13. Begins with the cessation of the menstrual flow from the previous cycle -FSH (Follicle Stimulating Hormone) from the anterior pituitary promotes the development of the follicle - which grows and begins secreting estrogen






14. Comlex process involving the formation and fertilization of gametes and regulation of these processes by bot parents






15. AKA stolon -woody - underground stems -can develop new upright stems






16. Steroid hormones necessary for normal female maturation -stimulate the development of the female reproductive tract and contribute to the development of secondary sexual characteristics and sex drive -responsible for the thickening of the endometrium






17. Muscular chamber which is the site of fetal development






18. Specialized sex cells






19. Four haploid cells produced from the second meiotic division after secondary spermatocytes






20. Chromatin condenses into chromosomes - the spindle apparatus forms - and the nucleoli and nuclear membrane disappear






21. (In Anaphase I) homologous pairs separate and are pulled to opposite poles of the cell -accounts for a fundamental Mendelian Law -each chromosome of paternal origin separates (or disjoins) from its homologue of maternal origin - and either chromosome






22. Multilayered sac of cells that contains - nourishes - and protects an immature ovum -produce estrogen






23. Differs from asexual reproduction in that there are two parents involved and the end result is a geneticaly unique offspring -fusion of two gametes






24. Method of growth - development - and replacement of worn-out cells






25. (In Prophase I) process where homologous chromosomes (chromosomes that code for the same traits - one inherited form each parent) come together and intertwine






26. Undergoes disjunction






27. Produced when one diploid primary female sex cell undergoes meiosis in the ovaries






28. Part of embryo that grows and feeds the embryo






29. Part of embryo that is the precursor of the upper stem and leaves






30. Thin and stalk like with a terminal sac called the anther






31. Part of embryo that develops into the lower and root






32. Some species of plants have flowers that contain only stamens and other flowers that contain only pistils






33. Near the end of telophase - the cytoplasm divides into two daughter cells - each wit a complete nucleus and its own set of organelles -In animal cells - a cleavage furrow forms - and the cell membrane indents along the equator of the cell and finally






34. The male organ of the flower and consists of a thin - stalk-like filament






35. Undifferentiated tissues in plants






36. Practiced by terrestrial vertebrates and provides a direct route for sperm to reach the egg cell -increased chance for fertilization success and females produce fewer eggs






37. External pouch that maintains the testes' temperature at 2C-4C lower than body tmperature - a condition essential for sperm survival






38. Union of the egg and sperm nuclei to form a zygote with a diploid number of chromosomes






39. Result when two ova are released in one ovarian cycle and are fertilized by two different sperm






40. Daughter cells of unequal size produced from one primary oocyte per month completes meiosis I -expelled from the follicle during ovulation






41. Male gonads - produce sperm in the tightly coiled seminiferous tubules






42. Result when a single zygote splits into two embryos






43. The development of an unfertilized egg into an adult organism






44. Regulates secondary male sex characteristics including facial and pubic hair and voice changes






45. Nuclear membrane forms around each new nucleus -at this point - each chromosome still consists of sister chromatids joined at the centromere






46. Nuclear division and followed by cell division






47. First barrier that the sperm must penetrate -enzymes secreted by the sperm aid in penetration of the corona radiata -arosome is responsible for penetrating the zona pellucida; it releases enzymes that digest this layer - thereby allowing the sperm to






48. Part of embryo that develops from the outer covering of the ovule






49. Hormonal secretions of the ovaries - the hypothalamus - and the anterior pituitary play important roles in the female reproductive cycle -divided into the follicular phase - ovulation - the luteal phase - and menstruation






50. Released from the ovary into the abdominal cavity and drawn into the nearby oviduct