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






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






3. Undifferentiated tissues in plants






4. 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






5. 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






6. 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






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






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






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






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






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






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






13. (In Prophase I) each chromosome consists of two sister chromatids - each synaptic pair of homologous chromosomes containing four chromatids






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






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






16. Mass of cells formed when the zygote divides






17. Central region where - after replication - the chromosomes consist of two identical sister chromatids held together in interphase






18. Cell division that follows karyokinesis






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






20. Specialized organs where gametes are produced






21. Regrowth of a lost or injured body part






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






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






24. (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






25. Have both functional male and female gonads






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






27. Part of embryo that grows and feeds the embryo






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






29. (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






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






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






32. Bulbs - tubers - runners - rhizomes






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






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






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






36. 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






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






38. Part of embry that are seed leaves






39. Production of offspring without fertilization -form new organisms by a single parent cell -offspring are genetic carbon copies of their parent cells -genetically identical to the parent cells (except mutations) -ex: fission - budding - regeneration -






40. 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






41. Egg






42. Result when a single zygote splits into two embryos






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






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






45. Have one cotyledon






46. Female gonads that produce oocytes






47. Nuclear division and followed by cell division






48. 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






49. 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






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