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






2. Undergoes disjunction






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






4. Located on scrotum -site for testosterone






5. Meristems provide a source of cells that can develop into an adult plant -can occur naturally or through human intervention -advantagous because it introduces no genetic variation and is a rapid form of reproduction






6. 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






7. Muscular chamber which is the site of fetal development






8. Produces two intermediate daughter cells with N chromosomes with sister chromatids






9. Flowering plants consisting of a few cells that exist for a very short time






10. AKA lateral meristem -located between the xylem and phloem






11. Part of embry that are seed leaves






12. Common passageway for both the reproductive and exretory systems






13. Union of gametes






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






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






16. 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






17. 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






18. 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






19. Produced when each meiotic division -rapidly degenerate






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






21. Division and distribution of the cell's DNA to its two daughter cells such that each cell receives a complete copy of the original genome






22. 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 -






23. 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






24. Split to form several bulbs






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






26. 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






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






28. A tubelike structure formed by the sperm once in contact with the membrane -extends to the cell membrane and penetrates it - fusing the sperm cell membrane with that of the ovum -Sperm nucleus now enters the ovum's cytoplasm to complete Meiosis II






29. Production of functional sex cells by adult organisms -fertilization forms a zygote -development of the zygote into another adult - completing the cycle






30. Undifferentiated tissues in plants






31. Cell division that follows karyokinesis






32. 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






33. 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






34. Ex: estrogens and progesterone -synthesized by ovaries






35. Reproductive structure of angiosperms






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






37. Specialized organs where gametes are produced






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






39. The process by which gametes are produced -involves two divisions of primary sex cells resulting in four haploid cells called gametes






40. Sperm production -occurs in the seminiferous tubules






41. Outer layer of oocyte cell membrane






42. Tail of sperm -propels the sperm - whereas mitochondria in the neck and body provide energy the locomotion






43. 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






44. Specialized cells with hard coverings that prevent loss of water






45. Menstrual flow






46. 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






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






48. Part of embryo that grows and feeds the embryo






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






50. Found in the tips of roots and stems where growth in length occurs