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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. 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






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






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






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






5. Located on scrotum -site for testosterone






6. Egg






7. 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






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






9. Nuclear division and followed by cell division






10. 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






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






12. 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






13. Muscular chamber which is the site of fetal development






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






15. 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






16. Formed due to cortical reaction -hard layer that surrounds the ovum cell membrane and prevents multiple fertilizations -Followed by the fusion of sperm nucleus and form a diploid zygote






17. Common passageway for both the reproductive and exretory systems






18. 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






19. 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






20. 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






21. Result when a single zygote splits into two embryos






22. Undergoes disjunction






23. Specialized sex cells






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






25. Outer layer of oocyte cell membrane






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






27. Female gonads that produce oocytes






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






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






30. Steroid hormones necessary for normal female maturation -stimulate the development of the female reproductive tract and contribute to the development of secondary sexual characteristics and sex drive -responsible for the thickening of the endometrium






31. 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






32. 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 -






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






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






35. A means of reproduction






36. Union of gametes






37. Specialized organs where gametes are produced






38. Sperm production -occurs in the seminiferous tubules






39. Split to form several bulbs






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






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






42. Four haploid cells produced from the second meiotic division after secondary spermatocytes






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






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






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






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






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






48. 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






49. Ex: estrogens and progesterone -synthesized by ovaries






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