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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. Centriole pairs are now at opposite poles of the cell






2. 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






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






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






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






6. Similar to mitosis in that a cell duplicates its chromosomes before undergoing the process -whereas mitosis preserves the diploid number of the cell - meiosis produces the haploid (1N) number - having the number of chromosomes






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






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






9. Egg






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






11. Produces monoploid spores that develop into pollen grains






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






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






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






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






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






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






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






19. Can be fertilized during the 12-24hr after ovulation -occurs in the lateral - widest portion of the fallopian tube -sperm must travel through the vaginal canal - cervix - uterus - and into the fallopian tubes to reach the ovum






20. 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






21. Union of gametes






22. Ex: estrogens and progesterone -synthesized by ovaries






23. Sperm production -occurs in the seminiferous tubules






24. Spore formation - vegetative propagation - and Artificial Vegetative Propagation






25. Muscular chamber which is the site of fetal development






26. Part of embry that are seed leaves






27. Cell division that follows karyokinesis






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






29. 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 -






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






31. 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






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






33. Have one cotyledon






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






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






36. Near the end of telophase - the cytoplasm divides into two daughter cells - each wit a complete nucleus and its own set of organelles -In animal cells - a cleavage furrow forms - and the cell membrane indents along the equator of the cell and finally






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






38. Located on scrotum -site for testosterone






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






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






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






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






43. 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






44. Bulbs - tubers - runners - rhizomes






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






46. Undergoes disjunction






47. 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






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






49. 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






50. Reproductive structure of angiosperms