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






2. Outer layer of oocyte cell membrane






3. Part of embry that are seed leaves






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






5. Large cell containing most of the cytoplasm - RNA - organelles - and nutrients needed by a developing embryo






6. Regrowth of a lost or injured body part






7. Diploid cells of spermatogonia






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. Result when a single zygote splits into two embryos






10. Specialized organs where gametes are produced






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






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






13. 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






14. Inner layer of oocyte cell membrane






15. 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






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






17. Two haploid cells yielded from meiotic division of primary spermatocytes






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






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






20. 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






21. Specialized sex cells






22. Union of gametes






23. 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






24. 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






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






26. 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






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






28. Have both functional male and female gonads






29. Muscular chamber which is the site of fetal development






30. Produced when each meiotic division -rapidly degenerate






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






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






33. Cell division that follows karyokinesis






34. Produces monoploid spores that develop into pollen grains






35. 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






36. Have two cotyledons that absorb the endosperm






37. Part of embryo that grows and feeds the embryo






38. Bulbs - tubers - runners - rhizomes






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






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






41. Have one cotyledon






42. The development of an unfertilized egg into an adult organism






43. Undergoes disjunction






44. Flowering plants consisting of a few cells that exist for a very short time






45. Reproductive structure of angiosperms






46. Hormonal secretions of the ovaries - the hypothalamus - and the anterior pituitary play important roles in the female reproductive cycle -divided into the follicular phase - ovulation - the luteal phase - and menstruation






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






48. Nuclear division and followed by cell division






49. Male gonads - produce sperm in the tightly coiled seminiferous tubules






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