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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. The development of an unfertilized egg into an adult organism






2. Sporophyte generation is the dominant - familiar form






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






4. Have one cotyledon






5. The process by which a cell doubles its organelles and cytoplasm - replicates its DNA - and then divides into two






6. Nuclear division and followed by cell division






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






8. 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 -






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






10. 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






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






12. Mass of cells formed when the zygote divides






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






14. Split to form several bulbs






15. 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






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






17. Regulates secondary male sex characteristics including facial and pubic hair and voice changes






18. 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






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






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






21. Female gonads that produce oocytes






22. AKA sperm production -occurs in the seminiferous tubules






23. Regrowth of a lost or injured body part






24. 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






25. Union of gametes






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






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






28. Undifferentiated tissues in plants






29. Produced when each meiotic division -rapidly degenerate






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






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






32. 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






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






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






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






36. 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






37. 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






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






39. (In Prophase I) process where homologous chromosomes (chromosomes that code for the same traits - one inherited form each parent) come together and intertwine






40. The male organ of the flower and consists of a thin - stalk-like filament






41. 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






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






43. Result when a single zygote splits into two embryos






44. Diploid cells of spermatogonia






45. Very similar to mitosis - except that meiosis II is not preceded by chromosomal replication -chromosomes align at the equator - separate and move to opposite poles - and are surrounded by a reformed nuclear membrane -new cells have the haploid number






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






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






48. Located on scrotum -site for testosterone






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






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