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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. Secretes estrogen and progesterone






2. Eggs






3. Bulbs - tubers - runners - rhizomes






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






5. 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






6. 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 -






7. Have two cotyledons that absorb the endosperm






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






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






10. Sporophyte generation is the dominant - familiar form






11. 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






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






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






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






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






16. 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






17. Ex: estrogens and progesterone -synthesized by ovaries






18. A means of reproduction






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






20. Diploid cells of spermatogonia






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






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






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






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






25. 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






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






27. 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






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






29. Muscular chamber which is the site of fetal development






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






31. AKA sperm production -occurs in the seminiferous tubules






32. (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






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






34. 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






35. Pass from the testes through the vas deferens to the ejaculatory duct and then to the urethra






36. Occurs in vertebrates that reproduce in water (fish and amphibians) -female lays eggs in water and male deposits sperm in the vicinity -lack of direct passage of sperm from male to female reduces chances of fertilization considerably






37. Female gonads that produce oocytes






38. Comlex process involving the formation and fertilization of gametes and regulation of these processes by bot parents






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. Produced when each meiotic division -rapidly degenerate






41. 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






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






43. Undergoes disjunction






44. 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






45. Regrowth of a lost or injured body part






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






47. Undifferentiated tissues in plants






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






49. Part of embry that are seed leaves






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