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






2. Reproductive structure of angiosperms






3. Eggs






4. 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 -






5. Consists almost entirely of the nucleus - which contains the paternal genome






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






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






8. Inner layer of oocyte cell membrane






9. Specialized sex cells






10. A means of reproduction






11. Sporophyte generation is the dominant - familiar form






12. Egg






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






14. Regrowth of a lost or injured body part






15. 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






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






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






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






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






20. 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






21. Part of embryo that grows and feeds the embryo






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






23. Produced when each meiotic division -rapidly degenerate






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






25. The embryonic undifferentiated cells that growth in higher plants are restricted to -undergo active cell reproduction






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






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






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






29. Undergoes disjunction






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






31. Cell division that follows karyokinesis






32. (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






33. 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






34. Produced in developing placenta if fertilization occurs - maintaining the corpus luteum and - thus - the supply of estrogen and progesterone that maintains the uterus - until the placenta takes over production of these hormones






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






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






37. Union of gametes






38. Result when a single zygote splits into two embryos






39. Bulbs - tubers - runners - rhizomes






40. Produces monoploid spores that develop into pollen grains






41. Part of embry that are seed leaves






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






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






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






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






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






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






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






49. Have two cotyledons that absorb the endosperm






50. 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







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