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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. Uncoiled DNA






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






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






4. Outer layer of oocyte cell membrane






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






6. Located on scrotum -site for testosterone






7. 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






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






9. Chromosomes condense - and the centriole pairs (in animals) separate and move towards the opposite poles of the cell. the spindle apparatus forms between them - and the nuclear membrane dissolves - allowing the spindle fibers to interact with the chr






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






11. Plant cells lack centrioles -spindle apparatus is synthesized by mcrotubule organizing centers that are not visible -cytokinesis in animal cells proceeds through production of a cleavage furrow -Plant cells are rigid and can't form cleavage furrows -






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






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






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






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






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






17. Egg






18. (In Prophase I) chromatids of homologous chromosomes break at corresponding points and exchange equivalent pieces of DNA -occurs between homologous chromosomes and not between sister chromatids of the same chromosomes (the latter are identical - so c






19. Female gonads that produce oocytes






20. Reproductive structure of angiosperms






21. Passes through the penis and opens to the outside at its tip






22. 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






23. 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






24. Underground stems with bubs - like the eyes of potatoes - that can develop into adult plants






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






26. Cell division that follows karyokinesis






27. Undergoes disjunction






28. 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






29. 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






30. Regrowth of a lost or injured body part






31. Produced after meioisis from spermatids that undergo a series of changes -AKA mature sperm -specialized for transporting the sperm nucleus to the ovum -elongated cell with a head - neck - body - and tail






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






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






34. Inner layer of oocyte cell membrane






35. Produced when each meiotic division -rapidly degenerate






36. Specialized organs where gametes are produced






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






38. Large cell containing most of the cytoplasm - RNA - organelles - and nutrients needed by a developing embryo






39. Have two cotyledons that absorb the endosperm






40. Centromeres split so that each chromatid has its own distinct centromere - thus allowing sister chromatids to separate. The sister chromatids are pulled toward the opposite poles of the cell by the shortening of the spindle fibers. Spindle fibers are






41. Menstrual flow






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






43. Gametophyte is the dominant generation -smaller - short lived organism that depends on the gametophyte for energy and nutrients - sporophytes grow on top of the gametophytes and produce spores that develop into gametophytes






44. Releases spores form the undersides of its leaves that develop into small heart-shaped gametophytes






45. Result when a single zygote splits into two embryos






46. Sperm production -occurs in the seminiferous tubules






47. 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






48. Diploid cells that undergo meiosis to produce four haploid sperm of equal size






49. 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






50. A means of reproduction