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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. Have one cotyledon






2. Regrowth of a lost or injured body part






3. Egg






4. Diploid cells of spermatogonia






5. Tail of sperm -propels the sperm - whereas mitochondria in the neck and body provide energy the locomotion






6. Surrounded by two layers of cells






7. 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






8. Specialized sex cells






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






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






11. Bulbs - tubers - runners - rhizomes






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






13. 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






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






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






16. Undergoes disjunction






17. Secretes estrogen and progesterone






18. Produced after meioisis from spermatids that undergo a series of changes -AKA mature sperm -specialized for transporting the sperm nucleus to the ovum -elongated cell with a head - neck - body - and tail






19. 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 -






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






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






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






23. Specialized organs where gametes are produced






24. Uncoiled DNA






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






26. After ovulation - LH induces the ruptured follicle to develop into the corpus luteum






27. 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






28. If the ovum isn't fertilized - the corpus luteum atrophies - the resulting drop in progesterone and estrogen levels causes the endometrium (with its superficial blood vessels) to slough off - giving rise to menses






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






30. 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






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






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






33. Meristems provide a source of cells that can develop into an adult plant -can occur naturally or through human intervention -advantagous because it introduces no genetic variation and is a rapid form of reproduction






34. Cell division that follows karyokinesis






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






36. Have two cotyledons that absorb the endosperm






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






38. 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






39. 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






40. Produced when each meiotic division -rapidly degenerate






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






42. Mass of cells formed when the zygote divides






43. A means of reproduction






44. Sperm production -occurs in the seminiferous tubules






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






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






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






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






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






50. Practiced by terrestrial vertebrates and provides a direct route for sperm to reach the egg cell -increased chance for fertilization success and females produce fewer eggs