Test your basic knowledge |

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. (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






2. Outer layer of oocyte cell membrane






3. After ovulation - LH induces the ruptured follicle to develop into the corpus luteum






4. Uncoiled DNA






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






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






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






8. 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






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






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






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






12. 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






13. Formed due to cortical reaction -hard layer that surrounds the ovum cell membrane and prevents multiple fertilizations -Followed by the fusion of sperm nucleus and form a diploid zygote






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






15. When a diploid sporophyte generation produces ahaploid (monoploid) spore by meiosis - spores divide by mitosis to produce the haploid - or gametophyte - generation






16. Expanding partition that grows outward from the interior of the cell until it reaches the cell membrane






17. Causes the glands of the endometrium to mature and produce secretions that prepare it for the implantation of an embryo -essential for the maintenance of the endometrium






18. Union of gametes






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






20. Mass of cells formed when the zygote divides






21. Caplike structure - derived from the Golgi apparatus - develops over the anterior half of the head -contains enzymes needed to penetrate the tough outer covering of the ovum






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






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






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






25. 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






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






27. Specialized organs where gametes are produced






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






29. 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






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






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. Undifferentiated tissues in plants






33. 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






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






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






36. Homologous pairs (tetrads) align at the equatorial plane - and each pair attaches to a separate spindle fiber by its kinetochore






37. Located on scrotum -site for testosterone






38. As in mitosis - the parent cell's chromosomes are replicated in the 2N number of sister chromatids






39. Undergoes disjunction






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






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






42. 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






43. 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






44. Triggered by acrosomal reaction causing calcium ions to be released into the cytoplasm






45. Egg






46. Muscular chamber which is the site of fetal development






47. A means of reproduction






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






49. Produced when each meiotic division -rapidly degenerate






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