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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. If the ovum isn't fertilized - the corpus luteum atrophies - the resulting drop in progesterone and estrogen levels causes the endometrium (with its superficial blood vessels) to slough off - giving rise to menses






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






3. 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






4. Surrounded by two layers of cells






5. Sperm production -occurs in the seminiferous tubules






6. Part of embryo that grows and feeds the embryo






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






8. Found in the abdominal cavity - below the digestive system -consist of thousands of follicles






9. Egg






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






11. Occurs in vertebrates that reproduce in water (fish and amphibians) -female lays eggs in water and male deposits sperm in the vicinity -lack of direct passage of sperm from male to female reduces chances of fertilization considerably






12. Produces monoploid spores that develop into pollen grains






13. Centriole pairs are now at opposite poles of the cell






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






15. 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






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






17. Muscular chamber which is the site of fetal development






18. Plants exhibit alternation of generation in which a diploid generation is succeeded by a haploid generation -diploid saprophyte generation produces haploid spores - which develop into the haploid saprophyte generation






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






20. (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






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






22. Lower - narrow end of the uterus -connects with the vaginal canal






23. Two haploid cells yielded from meiotic division of primary spermatocytes






24. Part of embry that are seed leaves






25. Specialized sex cells






26. Contains elongated cell with head - tail - neck - and body






27. Result when a single zygote splits into two embryos






28. Undifferentiated tissues in plants






29. Cell undergoes a period of growth and replication of genetic material before the initiation of mitosis -cell spends at least 90% of life in interphase -each chromosome is replicated so that during division - a complete copy of the genome can be distr






30. The spindle apparatus disappears. A nuclear membrane forms around each set of newly formed chromosomes. Thus - each nucleus contains the same number of chromosomes (the diploid number 2n) as the original or parent nucleus. The chromosomes uncoil - re






31. Female gonads that produce oocytes






32. Fibers of the spindle apparatus attach to each chromatid at the centromere to align the chromosomes at the center of the cell (equator)






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






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






35. Diploid cells of spermatogonia






36. Can be fertilized during the 12-24hr after ovulation -occurs in the lateral - widest portion of the fallopian tube -sperm must travel through the vaginal canal - cervix - uterus - and into the fallopian tubes to reach the ovum






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






38. Similar to mitosis in that a cell duplicates its chromosomes before undergoing the process -whereas mitosis preserves the diploid number of the cell - meiosis produces the haploid (1N) number - having the number of chromosomes






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






40. Occurs midway through the cycle -a mature ovarian follicle bursts and releases an ovum -caused by a surge in LH (Luteinizing Hormone) that is preceded - and in part caused - by a peak in estrogen levels






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






42. Haploid gametophyte gneration produces gametes by mitosis -gametophytes reproduce sexually - whereas the sporophyte gneration reproduces asexually






43. Stems running above and along the gorund - extending form the main stem -can produce new roots and upright stems






44. Produced when each meiotic division -rapidly degenerate






45. 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






46. Mass of cells formed when the zygote divides






47. Secretes estrogen and progesterone






48. Spore formation - vegetative propagation - and Artificial Vegetative Propagation






49. Cut piece of stem can develop new roots in water or moist gorund - which can be used to accelerate root formation -layering: stems of certain plants - will take root when bent to the gorund and covered with soil -stem of one plant (scion) can be atta






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






Can you answer 50 questions in 15 minutes?



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