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






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






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






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






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






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






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






8. Bulbs - tubers - runners - rhizomes






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






10. Common passageway for both the reproductive and exretory systems






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






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






13. Part of embry that are seed leaves






14. (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






15. Secretes estrogen and progesterone






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






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






18. Union of gametes






19. Uncoiled DNA






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






21. 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






22. A means of reproduction






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






24. 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






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






26. Split to form several bulbs






27. Begins with the cessation of the menstrual flow from the previous cycle -FSH (Follicle Stimulating Hormone) from the anterior pituitary promotes the development of the follicle - which grows and begins secreting estrogen






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






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






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






31. 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






32. 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






33. Muscular chamber which is the site of fetal development






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






35. Part of embryo that grows and feeds the embryo






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






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






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






39. Gametophyte is the dominant generation -smaller - short lived organism that depends on the gametophyte for energy and nutrients - sporophytes grow on top of the gametophytes and produce spores that develop into gametophytes






40. Cell division that follows karyokinesis






41. Union of the egg and sperm nuclei to form a zygote with a diploid number of chromosomes






42. 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 -






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






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






45. Have one cotyledon






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






47. Have both functional male and female gonads






48. Undifferentiated tissues in plants






49. Eggs






50. AKA sperm production -occurs in the seminiferous tubules