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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. Uncoiled DNA






3. Eggs






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






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






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






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






8. Reproductive structure of angiosperms






9. Menstrual flow






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






11. Undifferentiated tissues in plants






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






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. 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






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






16. Surrounded by two layers of cells






17. 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






18. Ex: estrogens and progesterone -synthesized by ovaries






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






20. Specialized sex cells






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






22. Very similar to mitosis - except that meiosis II is not preceded by chromosomal replication -chromosomes align at the equator - separate and move to opposite poles - and are surrounded by a reformed nuclear membrane -new cells have the haploid number






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






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






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






26. 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 -






27. Sperm production -occurs in the seminiferous tubules






28. 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






29. Result when a single zygote splits into two embryos






30. Part of embryo that grows and feeds the embryo






31. (In Prophase I) chromatids of homologous chromosomes break at corresponding points and exchange equivalent pieces of DNA -occurs between homologous chromosomes and not between sister chromatids of the same chromosomes (the latter are identical - so c






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






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






34. Inner layer of oocyte cell membrane






35. 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






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






37. 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






38. Mass of cells formed when the zygote divides






39. 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






40. Muscular chamber which is the site of fetal development






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






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






43. Union of gametes






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






45. Consists almost entirely of the nucleus - which contains the paternal genome






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






47. Production of offspring without fertilization -form new organisms by a single parent cell -offspring are genetic carbon copies of their parent cells -genetically identical to the parent cells (except mutations) -ex: fission - budding - regeneration -






48. Egg






49. 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






50. 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